"Chickens. They're a lot more animal than I think people realize. They eat almost anything organic, so their enclosures are barren. If you free range em - they will eat your garden, even buried stuff like potatoes.
Also they will both produce almost no eggs, then when you get 4-5, they will produce all the eggs. Like so many you'll start giving them away.
And animals love chicken. Hawks, coyotes, foxes, dogs, even damn raccoons get brave for some chicken.
Oh yeah - roosters. They totally sometimes call at 5am. Also they're mean suckers, and have large talons on their feet called spurs which are basically little chicken daggers for defense.
Oh, and eggs come from the same hole they poop from. Eggs almost always have poo on them.
I've loved raising chickens, but damn would I never want someone who isn't use to it to try. They're pretty gross at times, not at all intelligent animals, and tend to fight themselves when they aren't be predated by animals you'd never consider a threat.
They can be kind of affectionate though."