My pets randomly loose their names I’ve gave them and revert back to "juvenile pet." This especially happens when I select equip new pet right after I’ve charmed a new one. The new juvenile then gets the name that my pet had.
For example:
I have a fern hound named Koira. I tame a juvenile shark and equip right away in the interface that pops up. Shark is now named koira. I change to fern hound and its name is now juvenile fern hound. I change back to shark, and it’s named juvenile shark.
This issue also seems to pop up randomly on other pets to that I haven’t equipped out. My pink moa keeps reverting back to "juvenile pink moa" from its name Lawn Ornament. 
