That might be the only creature in 0.31 that a wrestler can actually kill.
I've seen a wrestler kill a mountain goat! Granted, it took him about one hour real time at 100 FPS (seriously), but in the end, he managed to break two of it legs and then finally strangle it to death. Also, hoary marmots.
...You're joshing me. I accidentally walled in a bared-handed and militarily-incompetent dwarf with an FB (four-horned giant corpulent blind cobra). She fled madly for a quite a while; eventually I took pity and enabled plant-gathering labor for her (totally forgot to consider whether or not she needed to stockpile harvests before munching). Didn't matter, as the beastie kept interrupting her while she hunted for vermin.
At last I decided she needed a properly dwarfy death, and drafted her into an army of one. (Plus one Dwarven Shield [tm].) She ripped off and tore open its four horns, and did some bruising and battering of beastie's body, tail, and throat, before it finally ripped her chest open. (The Dwarven Shield escaped unscathed. I can only assume that 2010 has dorf mommies putting the kids in backpacks instead of chest slings.)
The FB killed at least eight more dorfs, about five wardogs, about ten various stray animals, smashed in a bunch of outdoor carp shops, and direly wounded two of my legendaries, but the hapless mediocre armorer's still alive, and her main negative thought is the lack of chairs. You think she'd be bitching about the lack of her upper right arm, but no... it's the lack of dining room seating. For her sheer badassery, she has received a smoothed obsidian hospital room with a kitten cage. At least until the next season--if she doesn't stop going down red by then, she may need the lava treatment...
Although I gotta admit, if she ever has a mood, I'd like to see what she'd engrave...
Anecdotes aside, critters do seem to be way tougher in this version. It's kind of hard to test on my map, since whatever I did to generate the world seems to have resulted in the extinction of humanity and all above-ground animals.