Our dog walkers are the best in Oakland, Piedmont, and Berkeley.



glenn millstone

Glenn  Millstone
Owner and Director

Glenn was raised in a house full of dogs in Michigan, and dogs have played a huge part in his life ever since. After graduating from Michigan State University, he relocated to California and has lived in Oakland for the last seventeen years. After gaining tremendous experience, he took the final steps of creating a business of his own that met his personal expectations of dog care and quality.

The main thing that sets 'In Their Element' apart from other dog-walking services is the level of devotion to you and your dog, and our commitment to ensuring that you're both getting the best possible experience. Our goal is to make a positive difference in your life and the life of your dog. 

Glenn is trained and experienced in pack management, canine body language and psychology, and has over 4,000 trail hours Group Leader experience.  



francis pealatereFrancis Pealatere
Walker, Pack Leader and Boarder

Francis comes fortified with his right hand man, Samuel Groover, his six year old golden retriever. Francis was born and raised in Northern California, about three hours north of the Bay Area, on a mountain homestead, surrounded by canines at all times, as well as cats, birds, and small livestock. The dogs who became part of the family were usually found at the mouth of his parents' driveway, when they were abandoned for being "too old", or "misbehaved" too much. He learned early on how to teach dogs of all ages and backgrounds, and integrate them into a good familial setting. Francis is a keen observer, and picks up on small details regarding animal behavior and body language.

 Francis went to college on the Central Coast at CalPoly, and also studied Jazz at Cuesta College. When he's not leading dog walks by day, he enjoys playing music at night (he's an accomplished pianist). He also enjoys surfing.

Francis also does in-home boarding at his home in Northern California.

marisa piovarcsikMarisa Piovarcsik
Walker, Pack Leader

We are very excited to have Marisa Piovarcsik as part of the 'In Their Element' team. Marisa's passion for dogs turned into a career five years ago when she began working as a dog handler at a local dog daycare/kennel.  After a year of managing playgroups, she became a kennel manager providing care for the dogs boarding with them.  She's worked with thousands of dogs, including all breeds, sizes, and temperaments, which has given her lots of insight into dog behavior. Now she's excited to be working 'in their element', where she can make more of a positive difference in the lives of individual dogs. She’s also done volunteer work at Hopolong Animal Rescue, and has two dogs of her own, Indigo and Comet.

alexAlex Murray-Clark
Walker, Pack Leader

Alex was born and raised in San Francisco.  Art, dogs, and teaching are his biggest passions.  After graduating from the Cooper Union School of Art in New York City, he moved back home to the Bay Area, and has been teaching art at San Francisco Waldorf High School.  It was several years ago when he relocated to the east bay with his dog Gary, and since then, he and Gary have fallen in love with the vast network of east bay trails.  His time in the classroom helped Alex hone his skills in communicating clear, consistent, directives and leading energetic groups with purpose, be they children indoors or pups on the trail.  His wife Erin is also an Element dog walker, so they are a big time dog family!  Alex loves all kinds of dogs, and also does commissioned animal portraits in water color in his free time.  Check out his work at www.amurrayclark.com

ccCC Sheldon
Walker, Pack Leader

CC Sheldon grew up in the small Tahoe town of Truckee, California, surrounded by mountains and nature.  She is a proud graduate of Truckee High, and a truly adventurous soul with a real passion for life.  By day you’ll usually find her exploring the trails with her best buddy Gus, a four year old Shih Tzu that is an off-leash hiking sensei.  And by night, you’ll usually find her on a San Francisco stage, performing whatever play or musical she’s in at the time.  CC is an actress, dancer, and vocalist, and graduated from the Pacific Conservatory for the Performing Arts.  And when CC is on stage, you’ll usually find Gus napping under her dressing room table.  CC also just returned from four months abroad, traveling and exploring through many countries in South America.  She is super excited to be back in the bay, and looks forward to  a lot of upcoming adventures and fun, both on the stage and on the trail.