How children born in a dog , cat and human
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Birth is the act or process of bearing or bringing forth offspring. In mammals, the process is initiated by hormones which cause the muscular walls of the uterus to contract, expelling the fetus at a developmental stage when it is ready to feed and breathe.
Babies are born when the eggs or the ovum is fertilized by an X or Y chromosome sperm. Eggs are always of X chromosomes.
If an egg is fertilized by a Y sperm it will become a boy child.
If an egg is fertilized by a X sperm it will become a girl child.
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