p(A Very Happy Unbirthday) ≈ .997

Barley, a dog, examines a gift-wrapped package clearly intended for her.

One of the curious wrinkles of having a rescue whose past is a blank slate is having no concept of what her precise age is, or when her birthday might be. People ask how old she is more often than you might think, and I now have a range of answers whose level of Storytime Energy varies based on the apparent interest of the asker. However, this has given rise to an unexpected benefit: Barley tends to ride the coattails of every other birthday in her orbit. Considered over the course of a year, I think she ends up with net positive received gifts, relative to what I would expect if we actually knew her date of birth.