Grab him with argentav or quetz, if u r not patience enough with their speed. (Dont be dumb like me who travelling from redwood to snow biome for obsidian with only riding this guy) damn.... Im so nub XD
Ankylos are not useless even in the wild. If you're being chased by a carnivore, run to them. They are very strong depending on its level. And they usually spawn on groups, which means they can kill anything easily.