What is the difference between a black rat and a gray rat? What are their similarities.

It is not hard to spot a black rat if you look at them at the same time. However, they have their own differences, the black rat is still slimmer, and its muzzle is extended forward.
The color of these representatives is darker. But if you look then, in some animals of this species, the color is completely different. However, in size, this type of rat is significantly inferior to the patsyuk. The largest representatives of this species, reach a length of twenty-two centimeters, and about twenty-nine they have a tail. They gain weight only up to three hundred grams.
The gray rat is of medium size. Despite the fact that this type of rat is considered the largest. Only beavers, gophers, etc., which are not rats, surpass it in size. The color of this species is not always gray, mostly brownish, however, the baby rat pups are gray, mostly brownish, but the baby rat pups are gray. But still, despite their color, they remain gray rats.