Since I have been riding (more years than I want to say), I have had the following encounters:
1 dog, medium sized, reduced to somewhat smaller (or at least much less active) after the collision. This resulted in one thoroughly totalled Yamaha RD400.
1 large Bluejay...it collided squarely with the center of my chest while I was travelling at about 70 mph, removing all ability to breathe (in me, the bird was pretty well toast too, though). Did not crash, but I don't know how I kept from it.
1 Rabbit, medium sized, cottontail...did not crash, but resulted in a fairly exciting ride for a few seconds.
2 Cats (within 2 weeks of each other in the same stretch of road)...small to medium in size...did not kill either because I did not hit them squarely, just sent them sliding in a sort of rotating fashion across the road, legs outstretched...no crashes.
1 VERY large, VERY fat Easern Diamondback rattlesnake..I didn't crash and I didn't kill him but man, was he pissed.
2 Deer...one large buck and one doe. Those things are FAST.
1 Cow...this animal gave me a very dirty look, even though I missed her. They can be quite sarcastic.
Numerous other dogs, cats and squirrels.
1 large box turtle...he was right in my line at the apex of high speed corner...I just barely missed him.