This is good news for our pets, for now ittle oxygen masks for pets are becoming standard equipment for firefighters. Hoping to save dogs, cats, or other pets that caught in house fires,animal advocacy groups and pet-products suppliers are equipping departments all over the country with them.

This masks come in three sizes and fit snugly on snouts, can resuscitate animals suffering from smoke inhalation. They can be used on dogs, cats, ferrets, rabbits, guinea pigs, even birds.

An estimated 60 million U.S. households have pets, but statistics on how many die in house fires are hard to come by. Frequently, house pets hide during a fire, making rescues difficult.

The masks were originally developed for use by veterinarians but have evolved into rescue tools over the past several years, according to Brandi Marks of Smiths Veterinary Medical PM Inc., of Waukesha, Wis., which distributes them.

More than 2,500 sets have been distributed by Best Friends Pet Care, a kennel company that set up a matching-donation campaign to buy the masks, which cost about $60 per three-mask set.