'An animal guide is a specific, individual animal with which a character, usually an Avatar, shares a special connection. This animal often serves as said character's mount and friend, a companion with whom he or she can travel the world.' (From Avatar Wiki 'Animal Guides')
For Roku, he had Fang, his loyal dragon, for Aang, he had Appa his sky bison, and for Korra, she had Naga, her polar bear dog.
So if you were the Avatar, what animal guide would you want/have? Note: it does not have to be one of the animals I previously listed, it could be any animal in the avatar world, such as:
Canyon Crawlers, Catgators, Boar-q-pines, Badgerfrogs, Otter Penguins, Tiger seals, Lemurs (Winged or ringtailed), Armadillo Wolves, Lions, Bears, (Oh My!), Badgermoles, Bears, Eel Hounds, Gopher bears, Hog Monkeys, Platypus Bears, Rabaroos, Lope-eared Rabbits, Saber-tooth Moose Lions, Shirshus, The Unagi, Wolfbats, Fire Ferrets, Komodo Rhinos, Tigerdillos, Or any other animals you can think of c:
(P.S. Please inform me if this has already been posted, and I'm sorry if it was /: )