Ì was petting my rat the other day and I notice around his neck area he has a few lumps. Then I took a closer look at it and realized they were scabs/scratches. What could this be?I read online about its possible for rats to have mites/lice but i gave him a bath and looked very closely on his skin and cage and I saw nothing on him. And since I've done research on mites before I got the rat every bedding I brought I made sure to freeze for 24 hours before putting it in the cage. I also been keeping a close eye on him and he doesn't seem to itch himself more than normally so I dont understand why he has scratches on him and hes the only rat I have as well so it cant be another rat. Does he cut himself with his claws? He less than a year old so he kinda still a baby so his nails arent that long but if they are should I cut them or file them so they arent so sharp? But still even if they are sharp why does he feel the need to scratch so hard he scratches himself and causes scabs? I have considered maybe he is allergic to his bedding (I use carefresh paper bedding) so I thought next time I go to walmart or something I will switch his bedding to fleece blankets and see if that improves it. Besides I heard fleece is healthier to use anyways and a lot less money than bedding since you can wash it instead of throwing it away.I dont know its very strange and he's my first rat so I'm not really sure what to do. Thanks!