My lab/retriever mix is about 4 years old, so he's relatively young. Lately he's been acting very strange and very timid. He also seems to have leg or back pain and yelps whenever he jumps on/off of something, goes up/down steps, etc. However, he seems fine if he just walks normally. He also seems very afraid to move lately, standing in one spot for longer than a minute and just seeming like he's trying to limit his movement as much as possible. He was whining all night last night and wouldn't lie down. We figure it's something in his back legs/lower back, and if you feel his back hips he feels like he is quivering.
He's going to the vet tommorow, but I just wanted to see if anyone here has had this with their pet or if they have any suggestions.
Thanks.