I agree with you on tendency of cats, but this is the comment on youtube by person who posted this video
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I got this information from the other video, link at the bottom (Turkish language video)
They were crossing the street until a car hit the black cat.
The cat was constantly doing a massage exactly there where the heart from a cat is placed.(but maybe he just tried to get a reaction.)
The cat didn't do that for only 4 minutes, he stayed and tried to wake up for 2 hours.
The video is just 4minutes.
People tried to help but the white was FIGHTING against them when someone came closer, he got really angry, all people who got interviewed said that (from the other video, scroll down). A cat only fights against big creatures like humans when they have little kittens.
( I know it by myself, I live in turkey and we have a lot of street cats, but even when they are in groups, they run away when you come closer. only if I'm near to the kittens, they start to attack.)
But this here shows that cats protect also injured friends and he knows that it can't defend hisself. AND this shows that this cat has feelings. Cats would normally run away, because just for sex it isn't worth to risk his life, that's logical. Or do you really think it was just for mating?
After 2 hours he gave up and so the vet checked the black cat, but it was already dead.
But maybe he was not trying to wake up and just wanted to stay with his friend. NOBODY can really know what the white wanted to do. But I think here was more than just instincts. Everybody can believe what he wants.
But personally I don't believe that everything what happens in this world can be explained with bloody cold facts, like animals don't have a soul, don't have feelings, just instincts etc..
here you can see more from the situation :
http://www.youtube.com/watch?v=Xj-NbdO39ZQ
all people say he NEVER let me come closer
song: My immortal
country: Turkey exact place: Antalya