I'm really worried.
My 1.5 year old Pembroke, Louie, has always been a sweetheart. Always smiling, friendly, eager for belly rubs, loves to cuddle and make gargly noises. He does have a bit of a submissive urination problem that we've never been able to correct, although for awhile it got beter.
About a month ago I noticed he had a limp. The vet figured he had landed too hard when he jumped out of my car (Louie is not overweight, nor was the jump too high) and may have sprained it. A week's worth of painkillers stopped the limp, but I noticed one of his toenails on his front paws is darker than the others. I will be getting this investigated. Louie snaps and snarls when people go for his paws, and I think the nail may be infected.
Just a week ago, I had him get his booster shots for parvo and rabies. For both they used killed live viruses. After those shots, I noticed a change in behavior.
Louie is now extremely avoidant, and will shy away from people. When people approach him, he will submissively urinate. He acts very scared. When he does come up to people to cuddle, we will go to pet him...
...and he turns downright -vicious-. My dad tried to rub his belly and he snarled, snapping at his hand. When I scratched his back he did the same and even drew blood.
Now, we've had some bad weather lately with a lot of wet weather and Louie hates water, so we haven't walked him in awhile. I don't know if it's lack of exercise or what, but this behavior started after he got his booster shots.
He is a completely different dog now and it worries me sick. Louie is my first dog I've ever had and I don't want to seem like a bad dog owner. I want to help him but I don't know what to do! Please give me some advice!