What is the weight of a male rat?
My adult male rat is 640g
A male rat has testicles and a female does not! Take a peek under the tail! They are rather noticeable! If the male is neutered it may be more difficult. In that case compare the rat to another rat you are sure of the gender of. Male rats are a lot larger than females. Also you may be able to feel nipples on a female rat's stomach.
Just like with people rats vary in size. For a average female or male rat they are usually around fifteen to twenty centimeters in length. A male rats weight is normally two hundred and fifty grams to five hundred and fifty grams. And a female rat weighs between two hundred and twenty five grams to four hundred grams.
The fmale rat will sniff the male rat, while he sniffs her at the same time. You will need to watch them for about an hour to make sure they don't fight. If you do not want babies, keep them separate. The male rat will try to mount the female rat, if he is not spayed. If you do want babies leave them together for 10 days (If they don't fight.), and you will surely…