Why won't Bruno grow??

I took Bruno to his third or fourth vet check up.  He just wasn't growing.  He was eating, drinking and thriving.  but he wasn't growing.

The vet examined him and said he looked great.  He was a healthy beagle.

I asked the vet, "why isn't he growing"?

The vet scratched his head and responded, "Laurie, he must be a minature beagle".....

I paused, and then replied, "I didn't know they came in minature"!!

He said, "Apparently, they do"...

Bruno is 12 years old and still weighs only 18 pounds.  If it weren't for the gray, he would still look like a puppy!