You're speaking with Dr. Michael Salkin. Welcome to JustAnswer. I'm currently typing up my reply.
I'm sorry that your question wasn't answered in a timely manner, Lesley. Dink's behavior isn't pathognomonic (specifically indicative) of any one particular disorder but I would consider envenomation by flying insect or spider. Have you noticed any swelling in either his back or front leg? Is he licking these areas? May I have an update on Dinks, please?