Hi all... I just had the 2 adopted yorkie boys nails trimmed Tuesday night, they were quite long (the vet did them) anyway, as of late yesterday Houdini has been favoring his front left paw and is doing the same today. He is also walking like he's 100 years old. could this be from having his nails trimmed? If so, how long should I keep an eye on him before taking him to the vet?