Wild Animals | Rattlesnake

Rattlesnakes are predators that live in a wide array of habitats, hunting small animals such as birds and rodents.
Rattlesnakes receive their name from the rattle located at the end of their tails, which makes a loud rattling noise when vibrated that deters predators or serves as a warning to passers-by. However, rattlesnakes fall prey to hawks, weasels, king snakes, and a variety of other species. Rattlesnakes are heavily preyed upon as neonates, while they are still weak and immature. Large numbers of rattlesnakes are killed by humans. Rattlesnake populations in many areas are severely threatened by habitat destruction, poaching, and extermination campaigns.
Rattlesnakes are the leading contributor to snakebite injuries in North America. However, rattlesnakes rarely bite unless provoked or threatened; if treated promptly, the bites are seldom fatal.
Like all pit vipers, rattlesnakes have two organs that can sense radiation: their eyes, and a set of heat-sensing "pits" on their faces that enable them to locate prey and move towards it, based on the prey's thermal radiation signature. These pits have a relatively short effective range of about 1 ft, but give the rattlesnake a distinctive advantage in hunting for warm-blooded creatures at night.

Heat-sensing pits

Aside from this pair of simple eyes, rattlesnakes are able to detect thermal radiation emitted by warm-blooded organisms in their environment. Functioning optically like a pinhole camera eye, thermal radiation, in the form of infrared wavelength light, enters, passes through the opening of the pit and strikes the pit membrane located in the back wall, warming this part of the organ. Due to the extremely high density of these heat-sensitive receptors innervating this membrane, the rattlesnake can detect temperature changes of 0.003 °C or less in its immediate surroundings. Infrared cues from these receptors are transmitted to the brain by the trigeminal nerve, where they are used to create thermal maps of the snake’s surroundings. Due to the small sizes of the pit openings, typically these thermals images are low in resolution and contrast. Nevertheless, rattlesnakes superimpose visual images created from information from the eyes with these thermal images from the pit organs to more accurately visualize their surroundings in low levels of light. Research conducted recently on the molecular mechanism of this ability suggests the temperature sensitivity of these pit organs is closely linked to the activity of transient receptor potential ankyrin 1, a temperature-sensitive ion channel saturated in the pit membrane.

Skin and circulation

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Rattlesnake skin has a set of overlapping scales which cover the entire body, providing protection from a variety of threats including dehydration and physical trauma. The typical rattlesnake, genus Crotalus, has the top of its head covered with small scales, except, with a few species, a few crowded plates directly over the snout. The skin of snakes is highly sensitive to contact, tension, and pressure; they are capable of feeling pain.
An important function of the skin is the sensation of changes in air temperature, which can guide the snakes towards warm basking/shelter locations. All snakes are ectotherms. To maintain a stable body temperature, they exchange heat with their external environments. Snakes often move into open, sunny areas to absorb heat from the sun and warmed earth, a behavior known as basking. Nerves in the skin regulate the flow of blood into the veins near the surface. Rubio states, "The skin's acceptance of radiant energy, its ability to determine the temperature, and the snake's ability to move toward or away from one temperature gradient to another are among the most important behavioral actions in its daily life."
The skin of rattlesnakes is intricately patterned in a manner that camouflages them from their predators. Rattlesnakes do not generally have bright or showy colors (reds, yellows, blues, etc.), instead relying on subtle earth tones that resemble the surrounding environment.
Creases in the epidermal tissue connect the scales of rattlesnakes. When ingesting large prey, these creases can unfold, allowing the skin to expand to envelop a much greater volume. The skin appears to tightly stretch to accommodate the meal, but in reality, the skin is simply smoothing out from its creased state and is not under very high tension.

Jane Worll for Animalix

If dogs and cats had legal rights, how would that impact other animals?

People are duking it out over custody of the family companion animal in divorce proceedings. People are suing for damages when a companion animal is injured or killed. People are demanding consideration of companion animals during disaster response.
I guess that means laws giving rights to, at the very least, dogs and cats should be right around the corner, right?
Not so fast, pardner. There are plenty of adversaries to face down before you ride into that town.

Like who?

Well, the American Veterinary Medical Association, for one. To be sure, they WANT you to consider your pet a beloved family member. But they don’t want you suing the crap out of them when you believe a member of their ranks provides substandard care.
They do have a valid point. If dogs and cats had rights, the cost of veterinary care would go through the roof. Think your vet bills are high now? What would they be if the cost of malpractice insurance was tacked onto the cost? And that thing I’m doing now with using a dog medication off-label with Bubba Cat? I’m sure THAT would not be allowed to continue.

Pet stores and Puppy mill breeders are most certainly not for animals having rights. Would that impact the sale of animals? Probably. At the very least, the standards of care required for breeder animals would be strictly regulated, unlike it is now.

Research labs would not be able to conduct the testing on dogs and cats, because dogs and cats cannot provide consent.

Dog food would be more expensive as the requirements for manufacture would become more stringent. Though, to be sure, dog food is already a cut-throat business, and manufacturers are already employing strict manufacturing standards to avoid recalls that can destroy a brand.

Shock collars would most certainly go by the wayside. Say good-bye to your invisible fence!

If you think the one-upmanship of pet owners is bad now, imagine how it would be if your neighbor could report you for not bathing your dog regularly or not taking him for a walk every day. It would be kind of like child abuse investigations are now: some investigations have merit, while others are nuisance calls made to harass the one being investigated.

If dogs and cats had legal rights, how would that impact other animals?

It wouldn’t take long for courts to rule that the Great Apes should also be afforded rights. After all, they are the animals most like humans in appearance. That would impact research labs and zoos.

Animal agriculture would most certainly be impacted. The cost of meat, milk, and eggs would rise as farms would be forced to provide humane living conditions for animals used to feed humans.

Extermination practices would have to change considerably, as it would no longer be acceptable to just poison rats and mice.

As you have no doubt figured out, this is not a change that people would willingly accept in one lump sum. It’s going to take time, and a continuing change in public perception to get us there.

Are YOU still willing to fight for animals to have rights, or is the cost going to be higher than you’re willing to pay?

The cost of eggs is going to go up because of the law recently enacted in CA. Even midwestern egg farmers will have to raise their prices if they supply to California, because they will have to comply with the new regulations, that require the chicken’s cage be large enough for it to move around and flap its wings. That means fewer chickens in the same amount of space, which means fewer eggs, and higher heating costs for farmers. Of course, you could just buy eggs from your local farms, where you can see the chickens running free the way they are meant to be. The cost will be comparable.

You can always cut meat and dairy out of your diet if the cost irks you.

There should be a way to grant animals more rights in terms of quality of life without granting full “personhood”.

It is good that someone is tackling this subject. Like you say, it is large and complex. Mostly, I see it as sad.

to help animals, and more who think it is lucrative…Their prices reflect their greed in many cases.

There are faults on all sides, over breeding, shelters–(badly named if they ‘kill’), lax laws for abusers, the people who ‘have to have purebreds over mixed breeds, (those people should look at the percentage of purebred animals that end up in “shelters” and are destroyed,) the list goes on and on.

Turning things around takes so long, it sometimes feels hopeless—actually a good deal of the time.

Granting ‘personhood’–I wonder….’Personhood’ is what is responsible for the status of things now….

Thought provoking post. I think animals do have ‘rights’ or at least protection in law. I stand by the RSPCA (and other charities) in their fight for fair treatment of all animals – domestic or farmyard. And to bring prosecutions where necessary. Only by debating animal rights, will more people become aware of the issues and perceptions will change. In the meantime, it is incumbent on all animal lovers to bring wrong-doing to the attention of the authorities and social media.

The protection laws we have in place here in the UK are clearly not working so rights are needed. I don’t care how it effects puppy mills and pet shops. I would be happy to pay more for food. And vet treatment is one of those things you expect as a pet owner. I would pay whatever it took. 

However I do take your point on the off the label medicines. When one of my guinea pigs was ill, they recommended an anti-biotic which was actually for cat use but it worked exactly as they promised. 

However we already see pets as members of the family, why doesn’t...

Active Puppies in the park

Dogs are social creatures. In addition to spending time with their human family members, pups also like to socialize with other dogs. Dog parks provide the perfect venue for pooches to play and exercise with other dogs in a safe and controlled setting. However, introducing a puppy to the dog park scene might cause a pet owner some anxiety. How do you keep your puppy safe in this new environment full of other canines?

Puppies present a unique set of challenges to their owners when being introduced to dog parks. Puppies generally are more active and curious than adult canines which could lead to more conflict with other dogs; however, with caution and preparation, puppies can enjoy dog parks while learning important social interaction skills.

To start off, puppies younger than 4 months old shouldn't be brought to the dog park. They have not been fully immunized and will be susceptible to catching diseases from other dogs. If an older dog displays aggressive behavior towards him, your puppy could be traumatized during a very important stage of his social development. But once your dog is fully immunized and ready to be around new dogs, visits to the dog park will help him to develop good etiquette for healthy interaction with his fellow canines.

The key to keeping your active puppy safe at the dog park is to have a good grasp on how your dog will respond to other dogs. Before taking your puppy to the dog park, test how your dog will react to meeting a new canine friend. Introduce your puppy to a friend or neighbor's dog to gauge how he'll react.Next, we'll take a look at some more useful tips for keeping your romping bundle of fur safe once he gets to the dog park.
Once you've prepped your dog to enter the dog park, start off in a cautious manner. Evenings during the week, holidays, and weekends tend to be busy times for dog parks, so it's best to introduce your dog to the park when there's not a big canine crowd. Walk your dog before you take him to the dog park so that he's not too wound up with energy. Keep your first visit short so as not to overwhelm your puppy. Start out with a 15-minute visit, and slowly increase the length of your stay.

Once you've entered the unleashed area of the dog park, be sure to let your dog off his leash.

Mixing unleashed and leashed dogs can create a hostile environment. Leashed dogs and their owners can display body language that might be perceived by unleashed dogs as threatening, causing the unleashed dogs to act in an aggressive manner. Also, don't bring treats or toys to the dog park. Rewards and snacks might create jealousy and aggression between puppies.
Once your puppy is acclimated to the dog park scene, you still have to be vigilant about supervising him. Watch him closely when he's interacting with other dogs; keep an eye on both his body language and the body language of other canines. If he starts to become fearful or aggressive, it's time to leave the park. But with a little forethought and preparation, an active puppy will have a safe and rewarding dog park experience.