First off, I'm very happy to see a Mac port out and the game normally runs fine, but unfortunately the game becomes virtually unplayable during the level that introduces dogs because the game seems to unexpectedly quit whenever a dog is near. I have no idea why, and I'm not sure if it's actually because of the dogs, but whenever I'm near a dog, the game seems to crash within seconds. I was able to get past the first dog quickly after a few crashes, but the second dog in the level is impossible to get past without crashing, usually before the dog is even on screen. I've tried verifying the cache, re-installing the game, and restarting Steam, but to no effect, I still can't get past the second dog. At the moment the game becomes unplayable about 10-15 minutes into the 3rd level. If it means anything, this is all on a mid-2011 Macbook Air, running with an Intel HD 3000 graphics. Thanks in advance.