However, chimpanzees are highly endangered species, but also a great size, easy breeding and rearing, the cost of expensive, difficult to study as an animal model of AIDS.
They are not going to put on their best performance just after they laid their eggs, because they haven't invested that much time or energy in parenting yet.
The autumn wind sweeps the fallen leaf, the withered and yellow leaf left has raised it the mother, liked an only butterfly to dance lightly, slides into in the river.
Raising 6 children during the difficult times of the Great Depression took its toll on my parents' relationship and resulted in their divorce when I was 18 years old.
Psychiatrists who work with older parents say that maturity can be an asset in child rearing—older parents are more thoughtful, use less physical discipline and spend more time with their children.