ok the first picture is of what i believe to be a muskrat track(sorry for the bad pic, had to take it with my cell phone) the second picture is of the hole i found about 6 feet from the hole. the wierd thing is that i found what look like mouse or squirrel tracks in and outside the hole. theyre little about 1-2cm, they have 5 fingers.i couldnt get a picture as the light was failing and the flash was too strong. they almost look like baby mink or muskrat tracks. is this their breeding season or is it common for them to have babies at this time? the hole itself is about 6 inches high by 3-4in wide. any help or advice would be great.