This is a team of passionate animal lovers who truly love what we do. We don’t come in to work to earn a paycheck. We come into work to change and save lives. Now, get to know us.


Cassi K. Pettyjohn, B.S., D.V.M.

Veterinarian/Practice Owner

Dr. Cassi Pettyjohn grew up in a small town in Southwest Kansas. She graduated from Kansas State University in 2002 with a bachelor’s degree in animal science and in 2006 with a Doctor of Veterinary Medicine degree from Kansas State University College of Veterinary Medicine.

After graduation, Dr. Pettyjohn pursued a career in equine medicine, which took her to the great states of Iowa, Virginia, and Texas. After moving to the Houston area, Dr. Pettyjohn began to specialize in small animal medicine. Her special interests include dermatology, internal medicine, and dentistry.

She is married with 2 children, two miniature Australian Shepherds (Ankiel and Molina), one cat (Pudge) —all her animals are named after Major League Baseball Players. She enjoys spending time with her family and helping her husband around the farm.

Mandy Hall, DVM, MPH


Dr. Hall grew up in Magnolia, TX, and couldn’t wait to come back to south Texas after veterinary school! She received a Bachelor of Arts in Communication in 2009 from St. Edward’s University in Austin with the hope of being a journalist, but decided soon after how much she loved veterinary medicine. She graduated with her Doctor of Veterinary Medicine degree as well as a Master’s of Public Health degree from Oklahoma State University in May 2016.

Her special interests include clinical pathology, parasitology, and neurologic disease. She is also highly experience with zoonotic and foreign animal disease through her public health background.

Dr. Hall is married to Trevor Hall, another Houston native, and they have two beautiful fur-children: Perry and Bruce Banner. She and her husband enjoy going to see live music and theatre, especially local artists, and like any good Texan, they love to eat.

Benjamin Bedore, B.A., DVM


Dr. Bedore grew up in in a small town in central New York. He obtained his Bachelor of Arts degree in biochemistry from Vassar College in 2005. Deciding to leave the purely scientific route and enter veterinary medicine, he graduated from Virginia-Maryland Regional College of Veterinary Medicine at Virginia Tech in 2011.

Pursuing his interest in exotic animal medicine, he worked under board certified avian specialists in Virginia and Ohio. He has worked with many species of birds, reptiles, and exotic companion mammals, and he still enjoys working with dogs and cats.

Dr. Bedore is married and has several cats and three horses. He had ferrets for over 10 years and is looking forward to adopting more once he is settled in Texas. His hobbies include fishing, beekeeping, and he has started building 18th century Kentucky longrifles.

“When I look into the eyes of an animal, I do not see an animal. I see a living being. I see a friend. I feel a soul.”

-AD Williams

Care Team

Mandy Spence, B.S.

Practice Manager

Mandy graduated from California State Polytechnic University, Pomona, with a bachelor’s degree in biology in 1994. After graduating from college, she moved back to her childhood home in Willis.

She currently lives in the Woodlands with her husband, daughter, and pets, which include dogs, cats, fish, and snakes.


Veterinary Technician

Kelsey grew up in Willis, Texas where she graduated from Willis High School. She is currently in college studying elementary education. She has been a part of our team since 2013 starting as a volunteer and working her way up to be a Veterinary Technician. She has always had a love for animals as she had been very involved with her local 4-H and FFA groups growing up. She adores her animals at home and will do anything in her power to help your animals here at Stone Ridge.


Veterinary Technician

Starting out in Huntsville, Trenton raised heifers, goats, lambs, and chickens. Helping to deliver her first calf at 5 years old she grew to love the industry very quickly. At age 12 she moved into the Bryan school district, where she then got involved in FFA. Alongside showing Beef Master Heifers she also competed in LDEs, such as Agricultural Issues Forum. Graduating from Rudder High school in 2015 she then went to Stephenville, Tx to study Animal Science at Tarleton State University. After spending a year at TSU, she then transferred to Sam Houston State University to finish out her bachelor’s degree in Animal Science with a minor in Biology. She will be graduating in May 2019! She has one cat named Goose, and boy does he have a personality. She enjoys traveling with her boyfriend Justin, especially when they’re places they’ve never been to before. When she is not planning an adventure, she spends lots of time crafting and completing various projects.


Veterinary Assistant

Holly was brought up in Palestine Texas. Moved all around Texas, including Abilene, but eventually settled in Willis Texas. Holly recently completed her Bachelors in Animal Science at Sam Houston with a minor in Wildlife Management. She is married with three children who take up all of her extra time. Holly and her family also have a German Shepherd mix rescue named Kiera. She has a passion for animals since she was a little girl. She remembers playing vet with her Beanie Babies. When she was living in Abilene, she volunteered at the Abilene Zoo which ignited her interest in exotic animals, including snakes. From there, she decided to pursue my degree. She loves all animals and is excited to provide love and care for them. If she were to have a side hobby, she would enjoy music and singing. She used to be a part of a praise and worship team at a church in Abilene. She also loves the outdoors whether hiking, fishing, shooting, or horseback riding.


Veterinary Technician/Client Care Specialist

Maggie joined our team in 2015 but has been working in the veterinary field since 2007. She was born and raised in Kansas and has traveled all over the world. Maggie, along with her husband and daughter, moved to Conroe in 2012. Their home is filled with their two Pit Bulls, Pearl and Steel, yellow Labrador Aspen, Black Mouth Curr Ellie, a black cat named Whiskers and their two Pot Bellied Pigs Kirby and Lucy. In her spare time, Maggie enjoys spending time with husband and daughter hunting and riding their side by side down the trails.


Veterinary Technician

Originally born in Pittsburgh, P.A., Carrie moved to Texas as a child. She discovered her passion of caring for animals at the young age of 13. Together with her husband, they have rescued a variety of animals which they have adopted as their own. She is a graduate of the University of the West of Scotland with a Bachelor’s in Bio-Medical Science. She entered into the veterinary field in 1998. She is adamant about giving the highest quality of care for all animals and finds her passion in speaking for those who can not speak for themselves.


Veterinary Technician

Born and raised in The Woodlands, Texas; I am a licensed veterinary technician. I graduated from LSC-Tomball with an Associates in Applied Science and a Veterinary Technology degree in 2011. I then got my Bachelors in Wildlife and Fisheries with an emphasis in Vertebrate Zoology from Texas A & M University in 2014. I love working with most exotics but birds are my ultimate favorite! My passion in veterinary medicine is dentistry as well as client education; but all aspects of this field are fascinating and intriguing. I have two dogs, Wrangler and Cinch; three cats named Quill, Groot and Dory; and one horse named Red.


Veterinary Technician

I have been a Vet Tech since 2009 in Roanoke, Texas. In July 2018, we moved to the area for my husband’s job and we are sure glad we did! I have been married to my husband, Jason, for over 23 years and we have a 22-year old daughter named Taylor. We share our home with a Boston Terrier named Durham and a toothless cat named Stitch. We also have a few aquariums with fish and snails.

I love working with all animals but cats (especially the naughty ones!) are my favorite. I love to talk about feline heartworms and enjoy teaching clients about prevention.

When not working, My husband and I love to see the local sights. We love anything scary, and we have even done a few haunted tours since we have been here. I also love all things that swim in freshwater and brackish water. I enjoy talking with other fish keepers and learning more about caring for these amazing creatures.

Brenda, B.F.A.

Client Care Specialist

Brenda was born and raised in a small Texas town. She attended Sam Houston State University where she earned a degree in Mass Communication. Brenda is excited to pursue a profession that combines her love for animals and hospitality.

She enjoys cooking and baking, tackling Pinterest projects, and celebrating holiday eves. She currently resides in Huntsville where her cats, Daisy & Duke, run the household.


Veterinary Assistant

Paige was born in The Woodlands but raised in Willis, Texas. She is currently attending school at Lone Star Community College. She has always had a special place in her heart for animals since she was a toddler. She owns two dogs and three horses that she loves very much. In her free time she’s usually in the arena with her horses or out on Lake Conroe.


Joshua was born in the Woodlands and raised in New Waverly under the same roof since he was brought home. He graduated from Willis high school in 2016 as part of the top twenty percent of his class. He participated in 4H and FFA raising both show pigs and goats. He has always had a passion for animals and their well-being. He is currently a certified veterinary assistant through the Texas Veterinary Medical Association and has been with us for almost a year now. Currently attending Sam Houston State University, he plans on transferring to a larger college to attend graduate school.


Goodwill Ambassador

Push is our resident cat. He came to us as an orphaned kitten in 2013. One of our clients found him on a golf course with a seemingly broken leg. During his exam, he persistently “pushed” the technicians’ hands for optimum pets and scratches, earning him his name.

Push’s road to recovery started off bumpy with the possibly of a leg amputation in his future. The technicians and veterinarians nursed Push back to health, and his broken leg healed on its own- perks of being a strong, feisty kitten!

If he’s not napping in his cat tower, Push loves begging for dog jerky treats, greets clients and patients, and loves to investigate carriers as well as oversized handbags.