The Grrowler from Rocky Mountain Underground is a collar for your pooch that has two extra functions. There’s a zippered pocket that can be used to hold extra doggy waste bags and there’s a roll out water bowl that can be used to keep your best friend hydrated while you’re out on an epic hike. Grrowlers are available in six different colors and two sizes. You can read more about the Grrowler 3-in-1 dog collar at RMU and they are priced at $39.99 on Amazon.