If there's one thing I've learned while living in Scotland (where it's ALWAYS raining), is no matter if you're man, woman, boy, girl...or even a dog...raincoat or no raincoat, standing out in the cold, rain is a pretty miserable experience for all involved.
"Hey Cupar! I don't want to be outside either, but I also don't want to clean up pee and/or poop soaked into the carpet inside...so stop pouting and hurry up and do your business!