Wondering if it rained cat pee this afternoon

I just took my dog for a walk, and this is what happened in the course of the minute and a half we were outside:

Sniff steps and ground
Pee
Sniff ground and steps
Run for the safety of inside

He is a rather skittish guy, so him suddenly becoming scared and cutting walks short is nothing new. For example, if it is after 8 PM, he is scared of the dark and will only stay outside long enough to pee and race back inside - about 20 seconds total. Another example: we were walking by a traveling carnival; the kind that schools and churches sometimes use for an annual fundraiser. He's a social dog, so we thought he'd love the crowds. What we didn't calculate was the immense fear he'd have of the pirate ship ride. He saw the swinging boat, gave it a couple seconds' look, and bolted in the other direction. Weeks later, the carnival long gone, we took a walk past the same parking lot in which the carnival was held and doggie did not like that. Not one bit. It was as though he was certain that a pirate ship would pop up out of the ground and chase him down the street at any moment.

Where was I? Oh, yes. Cat pee rain. If you don't have one and are therefore unaware, dogs really like to sniff where other dogs have peed. This generally means all low vertical objects: trash cans, sign posts, tree trunks, and the stereotypical fave - fire hydrants. Not really the ground so much. The combination of fear and sniffing the ground leads me to believe it must have rained cat pee. Oh, he's sometimes afraid of cats. Did I mention that? Also fireworks, thunder, black people when we first got him (thankfully just a phase - for a time we feared our dog was a bigot), trains, helicopters, statues of animals...