I think my pup may bunny hop, but I have seen many dogs do this what really is bunny hopping. He is 5 months and I just found out his mom don't have "a" stamp as the breeder had stated and may have HD. The pup is very inactive and has been that way since we got him at 11 weeks.

I just had an interesting conversation with a veterinarian on this same topic as there are many ways a bunny can hop. And I had the same question.

I believe I understand the explanation, but take it for what it is - someone who just learned something repeating back what they think is correct!!!!

I think the reference is to the way a bunny hops when it is moving slowly about.

A fast bunny has a large range of motion in the rear legs and this is NOT the bunny hop you see in a dysplastic dog.

Basically a dog who is bunny hopping has both legs together and puts more of the weight slightly on the better of the two legs but they pretty much move in unison...and the back legs are under the body not outside the body as they are working together (I think this is how I understand it) and with some limitation in range of fore and aft motion.

Some normal dogs apparently do bunny hop sometimes and not all dysplastic dogs do it - my female who IS dysplastic only bunny hops at a canter or gallop but does have reduced range of motion in the walk and trot which she makes up for by moving her legs more quickly.

Thanks for the info.

I can't decide if I should have prelim or pennhip?

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.......I can't decide if I should have prelim or pennhip?

Here's a discussion called Comparing PennHIP and OFA:
http://www.workingdogs.com/ofa_penn.htm