In The Stand, which is my go-to manual for post-apocalyptic survival and which I've read so many times I could quote, animals quickly start to invade the human spaces. Particularly deer, because there are loads of gardens to graze on and no one to chase them away.
It happens in I Am Legend too, but it's not as good though.
So there'd be loads of deer and rabbits and other prey animals and more predators like foxes and feral dogs and cats. Probably not so many horses because people usually geld male horses so it would take a bit of time for mares to meet up with a stallion and breed and not that much time has passed. Same with cattle and sheep, I suppose.
Are there bears and wolves and cougars around Atlanta?
There'd also be thousands of crows and rats feeding on corpses. Actually a big crow or some kind of buzzard would probably have a go at a living walker and keep swooping off. Packs of feral dogs would pick them off too.
What drives me mad is that apart from a bit of flu, which was quickly cleared up, there are no other disease outbreaks.
The place is full of corpses. The dead in their houses are okay but there are thousands of walking dead which are rotting.
You could catch cholera because you stupidly keep killing walkers and getting covered in goo and leaving their bodies by the fence, near where Farmer Rick is growing potatoes and drawing water FGS.
The other thing that irritated me is that the dead walker pile by the fence never got any higher but you never saw anyone clearing them away.
Daryl apart, they're mostly soft city dwellers, so they probably would want to eat all the tinned food that had been left in people's houses rather than hunting and butchering a deer.
But they might start to do it because tinned food would get boring and maybe it would be safer to kill a passing deer rather than risking going into a walker-infested building - like Glen and Maggie did while casually browsing in that chemists for Lori's pregnancy test. Didn't they even have sex in the condom aisle?
Can you tell I've thought about this a lot?