This is a true tale, but not mine

Both of our farm dogs sleep in the closed-in deck attached to the house. It was unusual for Brutus, the male dog, to bark, so when he started barking furiously one evening we opened the outside door to take a look. We couldn't see anything unusual, but Suzie, our female dog, rushed inside. Brutus stopped barking. After a couple of nights of this, we figured it out: Suzie was pregnant and couldn't jump high enough to get in through the doggie door, and Brutus was barking for us to let her in.