Teto

 

Teto Fox is a pet fox Fox Squirrell in Nausicaä of the Valley of the Wind, a Fox squirrel possibly Teto made a small cameo in Castle in the Sky as riding atop one of the Robots.

Nausicaä of the Valley of the Wind
Nausicaä is given Teto as a gift from Yupa.

Castle in the Sky
Fox squirrels also make a minor cameo in Castle in the Sky.