Tony:
Black and white Cat called Penny (Female)

Steve:
A labradoodle called Toby (Male)

Natasha:
A European shorthair Cat called Sebastian (Male)

Bruce:
Greyish Husky called Balto (Male)

Clint:
Indian Scops Owl names Teddy (Female)

But the Farm have more anyways, like your eldest brother has a dog called Roger, your sister has a Horse called Angel, you other older brother has a Rabbit called Noah. And so on.

Pietro:
Rex Rabbits (x3); Peter, Benjamin and Abbie (Two Males and a Female)

Wanda:
A green and yellow Budgie called Coco (Female)

Loki:
A Mexican Black King Snake called Voodoo (Male)

Thor:
At your dad's: A donkey called Donkey (names after Donkey from Shrek (Male)
At your mum's: Two Guppy fish, Betty and Goldy (Two females)

Bucky:
A German Shepard called Dawn (Female)