I don't see my character attacking sentients unless they're evil.

Valid role, I've done it before. It makes it more difficult to regear at times, as there's a lot of nice gear on neutral sentient mobs that can be used by goodies. Just keep that in mind - you're taking a more difficult path here.

However, with regard to non-sentients, I would see my character attacking anything, up to and including Bambi and Thumper who smile sweetly. They're prey and Lund is an Arial. It just makes sense to me that he would hunt any beast.

Legimitate?

Totally. Few pointers that might help out here. Some areas (older ones in particular) might have non-sentient mobs that are coded as having an alignement. In other words, you might find some spiders who are 'evil' or deer and elk who are 'good'. To avoid the XP penalty of good-on-good violence, use consider beforehand just to make sure you're not going up against these types of mobs.

That being said, you should have absolutely no trouble finding plenty of evil sentients to rank on, crusade against, get gear from or fight for other RP reasons.

Also, I would see Lund eating legs and hearts. He's an Arial. To me this means he would eat what he kills, provided it's a non-sentient.

Legimitate?

Totally.

Kastellyn the Devourer of Magic, Lord of Legends