yesterday when i was walking my gsd she yelped when she jumped over a little jump, twice this happened so i had a look at her leg  and could find nothing wrong and she was happy to walk and there was no limping, today i went with her to an agility show and she jumped the first jump was very slow into the tunnel and then just howled with pain and lay down, again could not find anything, anyway she got up and walked back to the car  with a slight limp.I came straight home and she seems fine, i will of course take her to the vet tomorrow, any ideas, some one did mention a cruical ligament, , shes not in any pain to touch, she wants to go for a walk now and has got the hump because i wont go.

Well you wont know till the vet has a look. I sympathise as the couple of times mine has limped Ive imagined all the horrors in Bruce Fogles dictionary, none of which have come to pass.