Dog is a pure optimist who holds out hope that today might be the day Sensei shares her snacks with him...

While taking Cat to the vet via taxi, Sensei listens as the driver tells her about the cat he used to have.

A conversation with her editor reminds Sensei of the dog she had before taking in her current dog and cat.

Sensei recalls the dog she had as a child and reflects on how every pet has its own unique personality.

Dog and Cat celebrate their birthdays in slightly different ways...