Q. I have just adopted a mixed chichuaha. This past week she has had two episodes of stiffening of the hind legs with heavy panting for less than 5 min
A. It sounds like she may be having intermittent pain in her hind limbs or she may be having some kind of mild seizure activity. I recommend getting her in to see your vet as soon as possible for an exam, possibly labwork and x-rays to determine the reason for her episodes. Based on these results, your vet can then offer you possible diagnoses and appropriate treatment plans.