So it occurs to me that I'm a dumbass and never put up a list of Tobias's morphs. This would be especially helpful considering that I pulled him in canon from a little before he met his mother, so he doesn't have all the morphs he had in the series yet.
Canon morphs:
♠ Cat ["Dude"] Nope, unusable because he acquired the DNA before he became a nothlit.
♠ Red-tailed Hawk [His new 'original' form; preferred reconnaissance morph]
♠ Raccoon
♠ Hork-Bajir [Ket Halpak; preferred battle morph]
♠ Human [His old human form]
♠ Horse [Racehorse]
♠ Dolphin
♠ Hammerhead Shark
♠ Housefly
♠ Mole
♠ Bat
♠ Mosquito
♠ Deinonychus Unusable due to it being a Sario Rip morph.
♠ Seagull
♠ Flea
♠ African Elephant
♠ Rabbit
♠ Anteater
♠ Seal
♠ Polar Bear
♠ Sperm Whale
♠ Giant Squid
♠ Chimpanzee
♠ Bull
♠ Mountain Goat
♠ Andalite [Ax]
♠ Orca
♠ Nartec
♠ Honeybee
♠ Human [Taylor]
♠ Taxxon
♠ Human [Navy Sailor]
♠ Beaver
Camp morphs:
♠ Moogle
♠ Roach (Normal, acquired in camp.)