I want a beetle, it's the only practical tamable that I do not have and those things tank like motherfuckers. Pair them with a WW or a young dragon and I bet they'll do wonders for taking down the big boys. May not be the best option for crowd control (champs) but they will poison the hell out of anything you throw them at and they are TOUGH.
Problem is you have the feed the damn thing all the time.... and if you don't sure as shit when you need it to do something it wont and then it's dirt nap
I really wish they would tweak the loyalty a bit more.