Once when I was in my early twenties, my mother told me she hadn't felt like going to church that Sunday. "But then I saw a ladybug, and I just knew it was your grandma telling me I needed to go to church."
What makes this idea slightly less crazy is that my uncle used to call my grandmother "Ladybug" as a nickname. What makes it slightly more crazy is that my grandmother was still alive at the time, recovering from a surgery or sickness that kept her from church that particular Sunday, but otherwise fine.
Methodists don't usually have animal familiars, so I suggested my mother ask her mother, "Did you visit me in the form of a ladybug yesterday?" to confirm. I don't think she ever did.