In answer to the second half of the question, NO! There is no harm done to female animals if they are spayed before their first heat, so that they cannot become pregnant. Many strays die, along with their kittens if they are impregnated in their first heat which can come as early as 5 or 6 months of age. This is comparable to an 11-year old girl having a baby!
If you want your children to see baby animals being born, you may want to find a movie showing this sometimes bloody event!
Posted in: Critter FAQs