No, they should not be caged together. A male hamster can be dangerous for a newborn animal, even one of its own.
It all depends on the breed of hamster. Usually rats tend to be bigger when fully grown than a fully grown hamster. And if its a dwarf hamster the rat is definitely bigger.
Only if the bigger one is its mother or a hamster it has grown up with.
If you want them to breed, then yes if not then keep them separated
probably the cat because newborn puppies drink only milk-
i would get a bottle and use that then slowly move towards the usual hamster bottle
NO! you just shouldn't take a baby hamster outside not even a fully grown hamster should go outside.
They should be about as big as a full grown mouse, but maybe a little bigger.
A newborn weighs about 100 pounds. A full grown female weighs about 1,900 pounds. A full grown male weighs about 2,700 pounds.
Winter White hamsters probably get big as 3 to 4 inches
Yes it should because it is bigger and not smaller
About 4 years but I've seen a few live up to 6.
it depends on what kind of hamster you want to get. most hamsters will become about as long as a pocket comb. Teddy bear hamsters tend to get as big as one of those air conditioner remotes. Beware, it doesn't matter how large the hamster is, if you can fit a pencil under the space, you can fit a hamster.