Some idiot was all trying to bring his dog into the store

I was stopping by my local convenience store when some dude with his dog on a leash (not sure what kind, some medium-sized dog) came all walking in like nothing. The clerks informed him that he can’t have the dog in the store and the guy said “It’s a service dog.” Pfft… heard that one before. One of the clerks asked for ID verifying it as a service animal, but the guy said he didn’t have it on him. Lol, pretty important thing not to carry with you. I wonder why? So they told him he needs to leave the dog outside and he was all trying to argue! Said something like “Come on, man, my money’s green like everyone else’s!” The clerk responded with “We’re not refusing your business, we just want you to leave the dog outside.” The guy got all pissy and just walked out. How ridiculous is that? I seriously doubt that was an actual service dog he had, but even if so, providing ID to prove that it is should be the first thing you do when entering any establishment. If that dude is really gonna get so butthurt over not being allowed to have his dog in a store, he should get himself an emotional support animal.