Denise Rosch reporting

It's a threat everyone is very much aware of by now after 21 people have died from the H1N1 virus here in southern Nevada. Now, a house cat in Iowa is said to have the first confirmed case of H1N1 in a feline and it may have spread from a sick owner.

But it's not unheard of for people and pets to share diseases.

It's one hour of exercise Cheryl Thielhorn knows her dog needs, which is why you'll find them every day at one of the valley's main parks socializing and burning off energy.

"It's important as a puppy so she can learn not to be overly aggressive or afraid of other dogs."

But now, it's not biting some pet owners are worried about.

Denise Rosch: Tell me what you guys came in for today.

Carol Siskind, dog owner: A flu shot.

Denise Rosch: For the dog?

Siskind: Yes.

At the Lone Mountain Animal Hospital, canine influenza shots are now being offered. According to Dr. Debbie White, it's a virus that first showed about five years ago in racing greyhounds in Florida.

"Dog flu, or canine influenza, is the H3N8 virus. It's a very contagious respiratory virus relatively new to our area. In fact, there have only been a handful of cases diagnosed in Las Vegas."

But while there is no evidence canine influenza is a threat to humans, it's not uncommon for some diseases to jump species.

For example, a cat in Iowa has now been diagnosed with H1N1. And other pets are susceptible as well.

"One of the most common animals is the ferret," confirms Dr. White. "They can catch our cold and flu viruses."

But while the canine flu is something pet owners should be aware of, it's certainly not time to panic. Dr. White says it's always a good idea to talk to your vet. And if your dog begins showing symptoms such as a cough or high fever, take them in for an exam.

Siskind, who is moving to New York, was advised to get her pet vaccinated for canine influenza, something she never considered until now.

"He's also been a house dog. He hasn't been exposed to a lot of germs."

But back at the dog park, germs go with the territory. And keeping sick dogs at home is part of the responsibility of pet ownership.

Denise Rosch: What do you do to protect your dog?

Thielhorn: We do keep her vaccinated and go in for checkups. And I hope other people have their dogs vaccinated.

The health district now has more H1N1 vaccination shots available and will hold two clinics this Saturday from 10 am to 6 pm:

• Southern Nevada Health District, located at 625 Shadow Lane
• Henderson Public Health Center, located at 520 E. Lake Mead Parkway

The FluMist is available but the vaccines are still only for recommended priority groups. The shot will only be given to those who cannot receive the inhaled version, such as pregnant women.

Dr. White says if you're sick, it's best not to sleep with your pet.