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

After a rough day at work, Sensei is cheered up when Dog shoves a ball in her face. Even Cat shows concern for her in his own way.

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

Sensei recalls what Dog and Cat were like when they were little.

Dog once managed to spill the container his food is kept in, and he still tries to knock it over every day, optimistically hoping it will spill again. Cat, on the other hand, doesn't wait around for happy accidents.

Dog gets so excited by all the attention he gets at the vet's office, he doesn't even realize he's been given a shot. Cat, however, is less excitable...

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

When Dog breaks free while on a walk, all Sensei has to do to bring him back is sing and dance. Cat, however, is not so easily lured in...

Sensei has no trouble understanding Dog's love of being petted. With Cat, it's all in the ears.

Sensei has been trying out a new game with her dog and cat lately, and their reactions are quite different...

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