Aloha,
My little dog had a similar experience today at the beach after swimming and walking for a while on the beach. She is only two years old and has never had a problem swimming or exercising before. It was one of the most scary moments of my life. She whimpered and limped for a short time and then just sat down. It seemed exactly like she had a spasm or cramp. Tonight she is quietly resting and seems fine, but I am still concerned and will watch her carefully until tomorrow when we will see the vet, too.
Thanks for sharing your response, because otherwise, I am sure I would not sleep tonight worrying.
