Oh, I just used the graphics from the original ToT mod. And I know some of them could use some work; pretty much all I did to make them different sizes was stretch and shrink them. I didn't really have an effective way to make them look less crummy. It's true, I'm working with very basic programs. I do most of my editing with Paint, which, while sometimes effective, is not the best way to do some of the harder stuff.
BTW, those aren't bears or pigs, they're "Thalarctos," a bearlike alien creature found on Funestis. They've always looked a bit like pigs.