Molton Corgi has clutched so many wins against boss pets for me that I can’t help but deem him as my favorite. Honorable mention to my Hyacinth Macaw because it is super rare, and I had to beg a GM to give it back to me because I looted a Murloc to see it pop up in the loot while on the quest to feed the baby raptor, and the raptor ate the corpse before I could actually bag it.
Lifelike Mechanical Frostboar for me. I just like that it’s a boar and it’s mechanical and it’s frost. (I’m a dwarf engineer from a snowy area so yeah, we are jiving.) I named it Hogore. It might read like “Hogger,” but I pronounce it as Ho-gore just like Hodor from Game of Thrones. Just another layer of fun.
Not a battle pet specifically, but my favorite pet is K’ute. Having a Naaru follow you around is awesome, especially when enhanced with a magical pet biscuit.
I cannot choose a favorite child… though for following me around I tend to use different pets for different toons. This guy uses the baby blizzard bear quite a bit. One of my hunters uses Terky (and talks to him lol).