Conversation so far:
What is Comet?
Comet is the name of two fictional comic book characters owned by DC Comics whose adventures have been published by that same company.
Who's pet was Comet?
Comet was Supergirl's pet horse and, while in his human form as Bill Starr, her brief boyfriend.

Question: Who were some other super animals like Comet?
Self-contained rewrite: Who were some other super animals like Comet?