You will understand why senior dogs rule when you meet this adorable dog. They don’t get much sweeter than Cassidy! This gentle giant can’t help but bring smiles to the faces of everyone that meets her.

She may be considered a senior, but Cassidy would still love to be your dog-friendly, outdoor adventure buddy!

Cassidy is such a special girl and deserves a special home to spoil her rotten.

We think Cassidy is around 8 years young, weighing close to 60 lbs.

Meet her at Muttville on Rescue Row in San Francisco.