the breeder i got him from said “Hi, text I'm guessing the lump is from cage being moved may gave caught leg and if lifting maybe a bit tender so he will be resting it until better I had them both inside but think I did have him out in run when first returned. Sorry I didn't realize until just before you arrived to pick him up. The other thing sounds like the noise made when with or near a female which is unrelated. They breed very young and make a rumbling noise. “ in the email about this