There's no telling. If you rub something your old cat lies on onto the kitten, the kitten might be accepted. Good luck!
Not all kittens die that early on. If the kitten hasnt got a mother or a owner looking after it that may be the reason why. It may not be getting enough to eat or if it's a outdoor cat it may be too cold.
Yes.
The kitten could think its their mother. Is the kittens mother still with it? If not, the kitten might think for some reason that it is suckling on its mother.
Yes. I have a cat that grew up from a kitten in the same house with her mother.
It sounds like domination or battle for the fittest. If the cat is not the kittens mother this is natural. If the kitten is not protected by its mother the kitten is at risk to being killed until it grows older to protect itself. Obviously, the genetics of the mother wasn't fit enough to stay with and protect its offspring. Psychologically, your cat may see the kitten as a threat to its own existence when it grows older. Or maybe your cat was just hungry XD Addendum to above answer: It could also be that the kitten was sickly and posed a threat to the rest of the kittens. Sometimes mother cats will eat a sickly kitten who has died in order to protect the rest of the kittens from dying of the same illness.
No, it is not weird, nor uncommon. Believe it or not, some mother cats will allow their kittens to suckle for many months after they have been weaned. Most kittens will keep suckling for comfort reasons, as at three months old all its nutrition comes from solid food. If the mother and kitten live together, thee is no harm in letting the mother decide when she has had enough and stops the kitten on her own.
usually kittens need milk from the mother for two months .
Don't feed the kitten cow's milk, it doesn't have enough nutrients and the kitten will starve to death. There are plenty of substitute cat milk formulas on the internet. Go google it.
It depends on the character of your kitten, brave kittens often attack things, try to climb on things, and investigate things. Shy kittens might stay with their mother more often and do a little less of what the brave kitten will do.
Jaguar cubs (kittens) do not hunt. That is done by the mother.
The Mother cats chew them off to "low down" the kittens.
If you have a group of kittens or puppies belonging to the same mother, this is called a litter.