Who said "Every day is a new opportunity to be a better dog."?

This quote is attributed to Mr. Peanutbutter.

Every day is a new opportunity to be a better dog. - Mr. Peanutbutter

"Every day is a new opportunity to be a better dog."

Mr. Peanutbutter Perseverance

"I'm just a simple dog trying to make it in Hollywood"

"Every time it seems like things are going great, something comes along and ruins it"

"You know what the key to happiness is? Not thinking about sad stuff"

"I'm an optimist. That's my thing"

"Perseverance is the key to success."

"Don't give up on what you believe in."

"I've been through worse."

"You learn to live with the pain."