Respuesta :

S9infinite
dog
horse
cow
cat
pig

all of them are mammals, walk on four legs, breath oxygen, cant live underwater for a long period of time, give live birth, can be domesticated and can not fly :P 
Cat, dog, Squirrel, fox, rabbit.
All mammals, all of them walk on four legs, all of them are warm blooded, and all of them have fur.