• Seasonal Care

    Heat Stroke Heatstroke may kill or seriously injure your pet—but it can easily be avoided by adhering to the following tips. Never leave pets in cars on warm days. Exercise your pet during the cool part of the day. Look out for rapid breathing, loud panting or staggering; these can be signs of dehydration,

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  • Recognizing Illnesses

    Only a healthy pet is a happy companion. Assuring your pet's daily well-being requires regular care and close attention to any hint of ill health. The American Veterinary Medical Association therefore suggests that you consult your veterinarian if your pet shows any of the following signs: * Abnormal

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  • Mealtime

    Puppies Feed a high quality diet designed for puppies. A wide variety of diets and formulations are available and your veterinarian should be your primary source of information as to the best choice for your puppy. The amount fed will vary with the type of food and the individual dog, but in general,

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  • First Aid

    Never leave dangerous objects like pins, needles, or fish hooks within reach. Keep poisonous products and materials far from your pet's reach as you would with a child. Of course, before an emergency ever arises, it's a good idea to learn all you can about first aid techniques and pet health care. Never

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  • Grooming

    Cats Cats do a good job of grooming themselves, but regular brushing to prevent matting of hair is important. Cats rarely need a bath, but one can be given if necessary. Cats object to bathing in slippery tubs, so give your kitten something to cling to, such as a wood platform or a wire screen. Use

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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.