My Audrey has done the exact same thing I call it doggy pms lol no really, I rub her belly and kinda massage her belly because I've thought it could be gas ? Hope all turns out
So glad he's ok.
I'm just going to throw this out there since you're in AZ and probably have fire ants or those other big nasty ants that bite. Any chance he could have been bite by an ant and had a reaction? One of our dogs did once and he did just that, got all aggitated and panted. We gave him a benadryl and he slept and hours later he was just fine like nothing had happened.
Three Hooligans and 1 Angel - Wilson, Sally, Emma & Jack