You could check for urine with a black light if no visible signs.
Look with your eyes
how i wanna know how to make a rat
if it is green
A dog does not know the difference between a gerbil and a rat.
the ones that i know about are the guinee rat(newly discovered species), musk rat, black rat, the brown rat, dwarf rat, and the fancy rat
Well if ur rat is skinny then divide the spaces of the bars into the width of the rat.I know it sounds complicated but its not trust me.:D
i don't know ask a pro
Who the heck doesn't know how to clip a rat's toenails. Gosh you guys are idiots. lol
There is no reliable way to know for sure the actual age.
i dont know all of them but i know that there is rat posion in them
cuz you know by the sound
brain tissue sample
How the heck should i know