I finally found a vet who would neuter Tucker early. He turned 5 months (estimated) on the 20th and I took him in to be neutered this morning. I had found a knot on his chest yesterday afternoon so I had that looked at also. Turns out, it looks like some kind of a bite. He doesn't play outside unsupervised so it had to be where he was playing with the other dogs. Its infected so they gave me some spray for it. He also has an ear infection in both ears. He's had some black gunk in his ears ever since we adopted him. I kept asking my vet about it (I don't like this vet, my husband loves him) and he just kept saying that his ears just get dirty and letting it go. I also think he may have a UTI so they are going to check. I just thought I would share. Everyone please hope for a speedy recovery.