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  • Protect Your Dog or Cat from Heartworm Disease
    We Offer Quality Heartworm Treatment and Tick Prevention in Casper Protect your dog or cat from heartworm disease with us at Westside Animal Hospital. We see the debilitating effects of heartworms Read more
  • How Safe Is Pet Anesthesia?
    How Safe Is Pet Anesthesia? You might be concerned over your vet using anesthesia on your pet if you've heard other people’s scary stories. However, anesthesia is often used when a Read more
  • Diabetes in Dogs and Cats
    Diabetes in Dogs and Cats: Information From Your Casper Veterinarian There are many diseases we have in common with our furry friends, and unfortunately, diabetes is one of them. Diabetes occurs Read more
  • Preparing Your Dogs for a Flight
    Preparing your Dog for a Flight When you decide to bring your dog or cat on a trip, you want to make sure he or she prepares for the flight. A Read more
  • Importance of Routine Cat and Dog Vaccinations
    Importance of Routine Cat and Dog Vaccinations with our Casper Veterinarians Vaccinations help protect your pets from potentially fatal, communicable diseases, such as parvovirus, distemper, and rabies. The vaccinations used for Read more
  • Does My Pet Need Dental Surgery?
    Pet Dental Surgery Services from our Casper Veterinarians Just like humans, pets need routine dental care to maintain oral hygiene. Though there are preventative measures that you can take to maintain Read more
  • National Immunization Awareness Month
    Celebrate National Immunization Awareness Month with Pet Vaccinations in Casper August is National Immunization Awareness Month. At Westside Animal Hospital, we choose to celebrate by educating and reminding our community about Read more
  • Protect Your Dog's Paws in the Summer Heat
    Protect Your Dog's Paws in the Summer Heat with Our Animal Hospital in Casper Is your dog limping, holding up its paw, and whimpering after being outside on a hot summer Read more
  • Top Ten Fourth of July Pet Safety Tips
    Your Casper Veterinarian Offers 10 Tips for Keeping Pets Safe on The Fourth of July The Fourth of July is a scary and potentially dangerous time for pets. Here are 10 Read more
  • Why You Should Spay/Neuter Your Pet
    Our Casper Veterinarian Team Offers Spay & Neuter Procedures For Your Pet! A spay (performed on female cats and dogs) or neuter (performed on male cats and dogs) are elective veterinary procedures that Read more
  • Eye Care For Animals in Casper
    Pet Ophthalmology Services at Westside Animal Hospital​ The eyes are the windows to the soul: a statement just as true for our beloved pets as for their human companions. Keeping pets’ Read more
  • 5 Reasons To Choose Us As Your Casper Veterinarian
    Benefits of Choosing Our Casper Animal Hospital The veterinarians at our Casper Animal Hospital in Wyoming are dedicated to providing all animals with the care they need, including wellness exams, vaccinations, Read more
  • Westside Animal Hospital Is Your Source For Casper Pet Boarding
    Westside Animal Hospital Is Your Source for Casper Pet Boarding​ Pets need a safe place to go when their owners are away. In Casper WY, Westside Animal Hospital provides quality care Read more
  • February is National Pet Dental Health Month with Your Casper Veterinarian!
    February is National Pet Dental Health Month with Your Casper Veterinarian! This February, while you're enjoying a few sweet treats and chocolate for Valentine's Day, you'll (hopefully) be taking extra special care Read more
  • Westside Animal Hospital Is Your Home For Excellence In Casper Senior Pet Care
    Westside Animal Hospital Is Your Home for Excellence in Casper Senior Pet Care As the caretaker of an older pet, you probably know that your special animal deserves--and needs--a little special attention. But do you Read more
  • Feline Wellness Checkups in Casper
    Feline Wellness Checkups in Casper Feline wellness check ups are an important part of keeping your cat healthy and happy. At Westside Animal Hospital in Casper, we recommend regular wellness checkups Read more


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7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm


7:30 am-5:30 pm




5:00 pm-5:30 pm


Read What Our Clients Say

  • "The entire team at Westside Animal Hospital is fantastic!! They take such great care of both of our dogs - young & old - routine care and/or emergencies!! Thank you to the Drs. Johannessen for all you do for our family:) Our community is truly so fortunate to have you here!"
    -Melissa Y
  • "Very good facility. Both doc's are good about giving quality time and their assistant Ashley is wonderful."
    -Victor J