Believe it or not, the name Managarmr in Norse Mythology means moon-hound. So I guess you could say that the creature is more like a wolf with rocket freaking feet than a flying lizard. Become one with the floof woof, it is worth it.
These things have the biggest egos ever. They will try to kill ANYTHING and EVERYTHING they see (especially on lost island). What makes this even worse is the fact that they suck at fighting so any group of ordinary mammoths or amargasauruses can and will absolutely melt them without any hesitation. So prepare to rage quit multiple times while trying to tame these morons.