As many as will fit. If you have twenty cats, and they have grown to accept each other, all of them could fit onto a single twin-sized bed.
Like all beds in webkinz world, only one webkinz can get on a bed at a time. (It would be inappropriate if webkinz allowed too or more pets on a bed at a time)
they CAN have 9 but usualla its per nipple on the cat
Cats produce as little to one kitten to up to ten kittens a litter. It differs with each kind of cat.
A cat can have anywhere from one to more than ten cats in what is called the "litter." However, cats will usually have an average of two to four kittens at one time.
You cant. You can only have one in a bed at a time.
None. Dogs have baby dogs (puppies). Cats have kittens.
All cats are vertebrae's. there is not one that is not a vertebrae.
Cats have only one heart, or corazon.
It depends on what time you have on your device!
cats breed with different partners
Cats, like all placental mammals, only have one uterus.
If there are two cats in your house, buy 2 t-shirts one for 1 of your cats and one to the other. Then rub 1 t-shirt on one cat and put it in the other cats bed to get used to the smell of the other cat.(Do the same to the other cat). This should help the cats get used to the different smells that they have on each other. (This can be done for both cats and dogs.)