So yesterday I noticed Monty limping a bit on his front left leg when he woke up from a nap to go outside. I freaked and went to check the leg by touching it from paw to spine and didn't see any reaction. After a bit of walking he seemed to have walked it off and was fine. He was fine this morning but when I came home from work today to give him his pre-dinner walk and he didn't really want to go and was slightly favoring the leg again. I massaged the leg and then got to his spine and he seemed to react a little but let me continue to massage him. I also noticed today on the floor he was drooling (not usual especially not this much). Is this due to pain? My concern is Monty doesn't whine or cry when in pain (not even when he ripped his dew claw off!). I am not sure if I should take him to the vet or if I should just see if rest a couple of days helps...anyone else experience this?