Simba - From "The Lion King" (though more of a character than a pet).

Tramp - Also from "Lady and the Tramp."

Lady - From "Lady and the Tramp."

Oliver - From "Oliver & Company."

Perdita - Also from "101 Dalmatians."

Pongo - From "101 Dalmatians."

Baloo - From "The Jungle Book."

Gidget - Also from "The Secret Life of Pets."

Max - The dog from "The Secret Life of Pets."

Dug - The talking dog from "Up."