Animals usually grow the fastest in their first couple of years after birth where if they make it out of being a baby, they have a better chance to survive as an adult.
In the womb, egg et cetera.
The Industrial Revolution allowed the New England statesto grow most rapidly in a time where factories and industries reigned.
urban areas
Bacteria grow most rapidly during the log phase.
The animal that spends most of its life in trees would have to be the sloth.
It depends what the animal is.
Fall
dog
Brazil
it depends on the animal, but for most animals eating and pooping
A miricle mouse can grow back most limbs in the body. Which is why it is called a MIRICLE!
The animal kingdom!
alligator