bovine academy is like a school for bulls, cows, buffalo, cattle basically any animals that are bovines that are gonna be trained to be professional bulls and cows to be strong enough to win in a fight between predators, outlaws and Corrupt farmers

so yeah gabo and his wild squad members otis and Ferdinand are invite to join this academy

and the students are

gabo the bull, otis (barnyard) and Ferdinand (as mentioned)

Arizona (them fightin herds) aka the girl who is gonna be friends with the three main characters

Bill the bull (barnyard the game)

maquina (Ferdinand)

guapo (Ferdinand)

bones (Ferdinand)

angus (Ferdinand)

Valiente (Ferdinand)

clarabelle cow (mickey mouse)

cow (cow and chicken)

maggie (home on the range)

Grace (home on the range)

mrs. Calloway (home on the range)

and

El Toro (looney tunes)

and now the teachers

Bat cow (batman)

The Cowboys of Moo mesa

and Finally

Texas (them fightin herds)