I am 25 now and i can say that it probably never will.. however by 22-23 you certainly are not as stupid as you were when you were 18-19..
A mature male sheep is called a ram.
no.
The brain is physically mature when a person reaches their teen years. This, however does not mean that the person is mature or has such mental processes to be considered mature.
A boar
A mature male pig is called a boar. A mature female pig (that has produced offspring) is called a sow.
it is a boar
stallion
a "drake"
An adult.
about 21 or 22
No, the weight of the brain is not same in male and female. The weight of the brain in female is approximately 1400 and in male is 1600.
rooster you actually call a mature male chicken a cock. rooster is just a common name for them. you call a young male chicken a cockerell