Murphy was sleeping in his usual position (on his back) yesterday. I noticed what looked like a lump in/next to his testicle. I felt around it and sure enough there is a lump there. [

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Is this something common to beagle mixes or does he need to see the vet? I'm trying not to be paranoid, but it's second nature for me.
Update:
I decided to have Murphy neutered. He needs to be fixed anyway, so they can examine the lump after the surgery and biopsy the whole thing if they wish. I am so nervous about the surgery! [sm=uhoh.gif] If the lump turns out to be nothing after all, I won't have to worry about this ever again. This whole lump issue has been bothering me since I noticed it.
When I found out that he would have to spend the night after the surgery, I was really upset.
Murf came from a rescue and I just know he's going to think we abandoned him......
Wednesday the 14th is the day of surgery..... positive thoughts for my baby please.