Jason is a human! The tundra animals only apply for Elzule's country; Jason is from a different country than him. I haven't experimented with too many animals yet but wolves, gators, and dragons are canon so far (I know those are very random lol). There's 4 countries in my head world and each have their own flavor of animals, however Elzule's country is where they're mainly from, it's nicknamed the 'Land of Beasts'