I've been with Lily the whippet for under a minute and she's quivering like she's shitting blades. It smells like Wotsits and rotting meat. The turd is so pungent that, despite being eight to ten metres away, it smells like Lily has defecated over my shoes. "She's on the lamb," says owner Ali, by way of explanation. This isn't a euphemism for something else, like dog periods; Lily is literally just being fed a lot of proper meat.
Ali and her girlfriend are both in their early thirties and currently live in north London – a move they planned around Lily, the dog they were going to buy together. It was only there they'd have the necessary space for her: Hampstead Heath, where I've joined them on their morning walk. Everything about their life revolves around the dog: nights out (or lack of), freelance working schedules, exercise. Ali tells me: "I was looking at Instagram the other day and noticed I barely posted in 2017, and was like, 'What were we doing in 2017?' It's because we had a puppy: we literally didn't go out. You just end up talking about dogs all the time."
A bit like having a baby! I offer. "I don't want to be the one to say that," she says, "but I did have a friend who said, 'You've had it harder with your puppy than we had with our baby.'"
A recent study found that 44 percent of millennials see their pets as "practice" for babies, given the fact this generation is getting married and having children later in life than the generations before them. Increasingly, they're not just practice, but an alternative to children. This is perhaps a city-centric observation, but none of my friends in their late twenties talk openly about hopes of having a baby; rather, we flinch when we see a child walking around, out in public, on its hind legs. It's a fluffy friend we want. One that'll love us, not drain our minimum finances and not get in the way too much.
As Bob, 35, and Molly, 29, who own Billie, the chihuahua pug, put it: "She costs nothing, sleeps through the night, and our single friends still want to hang out with us." For someone single, sociable, career-minded and renting who can't imagine their life five years ahead, let alone owning a house and having a baby, it's an achievable dream. Something to grow up for.
"In your twenties and thirties, you want to feel responsible for something, but you don't want to have a family. We still feel very, very young," says Julian Victoria, editor of DOG, a chic lifestyle magazine for dog owners. DOG's readership are of millennial age and mostly independent artists, creatives or freelancers. "When you see a bunch of mothers sitting around having coffees with babies in prams, that's the same as with dog-owners," Julian continues. "You end up going to the same places, to the park, you meet others walking dogs. It's a community that a lot of young people are realising they want to be a part of."
That was the motivation of Ali, who says, "It was more about the lifestyle, if that doesn't sound too tacky; of being outside more and having companionship during the day."
It's obviously relevant, too, that millennials are the freelance generation. Businesses get it; WeWork-type office spaces allow dogs to sit alongside humans where they can, and some offices even offer a dog-walker. A poll recently went around the VICE UK office about allowing employees to bring dogs to work, and when a rumour spread that one member of staff had been seen clicking "no", many publicly seethed with rage.
It's during this new age of loneliness in which we've learnt that the love and bonding hormone, oxytocin, is sparked in both dog and owner when they look at each other. A generation reporting high rates of anxiety and depression is well aware that caring for animals contributes to a lower blood pressure and rates of stress. "It's a boost to have someone run around the house shouting with excitement just because you came home after work. Unconditional love feels great," say Bob and Molly of Billie. "She's hilarious and brings you out of yourself when you're down in the dumps, just by sneezing and looking confused, or something like that. She's a real serotonin boost, I've no doubt."
"They're so, so much work, but I can see why people want dogs," Ali had said when I explained the premise of our meeting. "You have to stick to your little routine. There's something really steadying about having a dog. It's lovely, actually."
And as I near the end of my walk with Ali and Lily at Hampstead Heath, I do feel a sense of calm and stabilisation. It could be the shades of green, the dappled light, the slight exertion on my pathetic body. It could also be the dog.