mammals
Warm blooded animals take care of their young cold blooded animals do not.
some of the cold blooded animals take care of their young Yes
That's a duck-billed platypus.
yes
There are no cold blooded mammals.
yes
yes
Counting out the human being....most likely Primates
Probably yes, when a cold blooded animal such as a reptile (snake) lay their eggs they stay with them until the eggs have hatched and then off they go. While a warm blooded animals generally give live births (other than birds) they tend to stay with their young and care for them until they are old enough to take care of themselves.
no
there mothers
Yes, the female takes care of the young. The male takes no part in raising the offspring.