• Can Pets Sense Pregnancy?

    Your pets probably don't understand that in nine months a new baby will be joining your family, but dogs and cats do detect differences in mood, posture, behavior, and body chemistry that clue them that an enormous change is happening. Your dog or cat will pick up other signs, too: Our four legged

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  • Assistance Dogs Offer Many Benefits

    Assistance dogs are not just for blind or visually impaired people. Today, these dogs help people with a range of conditions enjoy full lives. Guide Dogs Guide dogs, also known as Seeing Eye dogs, help blind and visually impaired people live independent lives. These dogs "see" for their owners and

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  • New Uses for Animal DNA

    Advances in science have enabled the decoding of several animals' DNA. Knowing the genome of a species has enabled medical professionals to detect some diseases that have a genetic basis. But it also has other uses, even in the criminal justice system. The Veterinary Genetics Laboratory Forensic Unit

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  • White House Pets

    A surprising issue that has arisen in the American political arena is not foreign policy, but rather which breed of dog the Obama's chose to join their family in the White House. Barack Obama has announced that his family narrowed their breed choices to a Labradoodle, a mix between a Labrador retriever

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  • The Incredible Sense of Smell in the Dog

    There are many ways in which people and dogs are similar, but an area in which dogs are much superior is in their olfactory ability, or their sense of smell. Dogs can smell 100,000 times better than humans. In tests, dogs have been able to detect a chemical in a solution diluted to 1 to 2 parts per trillion.

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  • Rescue Dogs

    Among the many heroes in the days and weeks following September 11 were search and rescue dogs. These dogs and their handlers were brought in from all over the country to help at the New York and Washington, D.C. disaster sites. Many people are not aware that the handlers of these dogs are not always

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Location

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Office Hours

Our Regular Schedule

Diamond Bar Office

Monday:

8:00 am-6:00 pm

Tuesday:

8:00 am-6:00 pm

Wednesday:

8:00 am-6:00 pm

Thursday:

8:00 am-6:00 pm

Friday:

8:00 am-6:00 pm

Saturday:

8:00 am-1:00 pm

Sunday:

Closed

Testimonials

Read What Our Clients Say

  • "We have been going to Companion Animal Hospital for over two years. The staff at Companion Animal Hospital is the most caring and considerate group of people who treats all of our "kids" like they are their own. We are very fortunate to be able to call them and have them there when we needed them. Awesome service!!"
    Yoshi M.
  • "I found this place about 7 years ago when I was desperately calling around to see if a doctor would be willing to work on a Saturday to perform emergency surgery and save my pup. The receptionist called Dr. Lee and he agreed to drive back early from his church retreat for a 6 p.m. surgery ON A SATURDAY. We are in Orange County now, but we still make the drive so our sweet dog can see Dr. Lee for check-ups. I am forever grateful."
    Julia S.
  • "A few years ago we had do put our 16 yr old Charlie to sleep because he had a stroke. They were so caring and compassionate. They gave us all the time we needed with him. Now it looks like we will need to take out 15 yr old yorkie :(. We won’t take her anywhere else."
    Patricia H.