When Ohio-based dog photographer Greg Murray saw his rescue, a Cane Corso Mastiff named Bailey, caught up in a blissful reverie attempting to lick peanut butter off her face, he was hit with playful inspiration: What if he captured other dogs in similar states of snackish interaction with peanut butter?

So was born Peanut Butter Dogs, a new book that showcases over 140 pooches getting up close and messy with their favorite snack.

Here’s a peek into the project.

Check out more of Greg’s photos at his Facebook page.