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  • Ovarian tumors are quite rare in North American pets, mainly due to routine spaying practices. This handout discusses ovarian tumors in dogs and cats. The various forms of ovarian tumors, clinical signs, diagnosis, treatment, and prognosis of this cancer are outlined.

  • Some over-the-counter human medications can be used for common ailments in dogs, but you must consult your veterinarian before using them to determine the correct dose and to ensure they will not interact with other medications your dog is taking. Some medications are toxic. If the condition you are treating does not respond to treatment, contact your veterinarian.

  • Obesity is the most common problem in dogs in North America and leads to an increased risk of diabetes mellitus, heart disease, and several types of cancer. Extra body fat causes increased inflammation associated with osteoarthritis. Reducing inflammation and pain can help an overweight dog to regain activity, which in turn can lead to more appropriate weight loss. Obesity can be prevented or reversed when dog owners are aware of calorie intake, body condition, and exercise.

  • Obesity is a common problem in dogs and results from too many calories being eaten and not enough calories being burned. Extra body fat causes increased inflammation in the body, worsening osteoarthritis and joint disease. To prevent your dog from becoming obese, speak to your veterinarian about your dog's calorie needs and an appropriate food for your dog's life stage.

  • Oxazepam (brand names: Serax®, Novoxapam®, Oxpam®) is a benzodiazepine used to stimulate appetite and to treat behavior-related disorders in cats and dogs, such as anxiety and phobias, in conjunction with other therapies. It is given as a capsule, tablet, or compounded liquid suspension.

  • Oxybutynin is a medication used to help stop bladder spasms that cause urine leakage (refractory urinary incontinence) in cats and dogs. This medication is used off-label in veterinary medicine. Oxybutynin comes in several oral formulations.

  • Oxytetracycline is an antimicrobial medication used to treat bacterial infections. It is used to treat infections in cats, dogs, and fish. It is used “off label” or “extra label” to treat bacterial infections in exotic animals. Oxytetracycline comes in oral tablet or compounded liquid forms.

  • Oxytetracycline/polymyxin B ophthalmic (brand name Terramycin®) is a combination antimicrobial medication used to treat certain types of bacteria (gram-positive and gram-negative). It is used to treat eye infections in cats and dogs. It is used “off label” or “extra-label” to treat eye infections in avian species, hedgehogs, and rabbits. Oxytetracycline/polymyxin B comes in ointment form.

  • Oxytocin is a hormonal agent used to induce or enhance uterine contractions at the time of birth in cats, dogs, rabbits, rodents, and other mammals. Oxytocin is also used in mammals to help start milk production, control uterine bleeding, and help shrink the uterus to normal size after birth. It has been used in birds and reptiles to help resolve egg binding.

  • Many dogs instinctively hide their pain, as a survival mechanism; however, dogs have a nervous system that is very similar to that in humans. This handout outlines how to know if your dog is in pain and how you can help.