No, hamsters and rats are different species so can't reproduce. I would have thought rats and hamsters would probably fight, as Syrian hamsters are extremely territorial and rats are so much larger than hamsters anyway.
No.
No. They are two different things.
you shoudl not put a hamster and a guinea pig in the same cage no matter what.
guinea pig
a guinea pig.
A guinea pig.
No
No
guinea pig
No the guinea pig will no get pregnant.
A guinea pig may cost a little more than a hamster.
it depends what type of guinea pig you have
Only the guinea pig she mated with but be sure to separate them after birth