Children who grow up with dogs and cats are also less likely to have allergies and asthma. [1] Lovable little filth monsters drag in all sorts of stuff, I guess haha.
Sadly pets and farms still aren't a cure all. I grew up/live on a farm with cows, cats, and usually a dog. I've got a lot of environmental allergies and a few food ones, and my day to day symptoms can be pretty bad, especially this time of year. Oh well, who knows how much worse I'd be if I hadn't grown up on a farm.