I'm going to say some sort of turian deer-equivalent. And yes, his mom cooked it. This was before she had a neurological disease.

Honestly, he felt proud. The idea of feeling shame for hunting and for killing a dumb animal never really occurred to him. Just like the idea of feeling guilty for snuffing out criminal scum never really occurs to him.

The first time he met an alien... probably a volus or one of the other turian client races. He was a bit weirded out, but turians are pretty much prepared to enter the galactic stage as it is. So he got over it. Still a bit racist, though.