How can I rename my pet?
You can rename your pet in the "Menu" under "Character Info". There, follow the instructions under "Pets" to rename your companion.
Note that every pet has a limited amount of renames. You will get 3 renames after you have tamed a pet. Additional renames can be purchased in the Marketplace.
Also note that your pet must be summoned and the bad name filter applies also for your pet's name. Furthermore the name must conform to the TibiaME Rules.