My Jack Russells leg
My Jack Russell is 6 years old. This has happened about 5 times in the last 2 years. She will be walk fast or running and her back left leg will raise up and she stops herself and has to wait a minute until she gets in back down to the ground. It only last about 3 seconds. She doesn't cry or seem to be in any pain. It to me looks like it gets dislocated or something. Could this be a cramp? or more serious? Thanks so much for your help.