Within my fantasy book I have a species of animal which lives in a dry climate - the desert. This animal is a furry mammal with four legs; for simplicity, let's say it looks like a bear. The species is thought to have gone extinct hundreds of years ago but my protagonist finds it as a baby on his journey.
What I want is an explanation or reason of how this animal could have survived. Is there an explanation - even a plausible magical one - by which this animal could have survived within the embryonic sac? I don't want it to be inside an egg and then hatch. But are there any other option/explanations without having it be hatched out of an egg?
The animal in question is a carnivore.