DEAR DR. FOX: I have been wondering if it's bad for dogs to sleep under a blanket and comforter at night? It seems to me that the oxygen supply would get pretty low after a couple of hours.

What is your outlook on this? -- Q.C.C., Central Point, Ore.

DEAR Q.C.C.: Many dogs, and cats too, enjoy having their own blanket to snuggle under. While an animal who begins to experience oxygen deprivation will eventually get out from under the covers, I consider it unhealthy for an animal to keep breathing the same air in a limited space for any length of time. Dogs with pushed-in (or brachycephalic) muzzles, windpipe/tracheal weakness and those with incipient respiratory and heart conditions are particularly at risk.

Encourage your dog to sleep on the top cover of your bed under his own light cotton blanket or bath towel.

DEAR DR. FOX: I took my cat to an animal behaviorist because of inappropriate marking. We went through all the causes, and I have changed a few things.

The cat is neutered. The vet recommended Royal Canin Calm. I purchased the dry cat food, and noticed it has corn and wheat products. I also feed my cats canned food, which I believe is better for them. I have also been feeding them Merrick Before Grain dry food.

Do you have any suggestions for a dry cat food that would be similar to the Royal Canin, but with better ingredients? What about giving cats milk? Does milk have a calming effect?

I have five cats, all fixed, and I do animal rescue. I do not intend to foster any more cats. Right now my cats just tolerate each other. -- E.P.

DEAR E.P.: These specially formulated, prescription-only (i.e. available at a marked-up price from a veterinarian) diets are part of the new wave of adding various supplements to manufactured pet foods and deleting other ingredients. The formulations are marketed as holistic veterinary medicine and nutritional therapy.

While some of these special diets can provide some benefits, many are a moneymaking scam.

The special diet to which you refer, which is also formulated for dogs, has added tryptophan, vitamin B3 and hydrolyzed milk protein as claimed calming ingredients. Tryptophan is what makes people drowsy after a meal of turkey. A glass of warm milk before bed can help people sleep better. I would opt for a healthy raw food diet for your cat, or use turkey as the single protein in my cat food recipe posted on my website, DrFoxVet.com.

There are many reasons why dogs and cats can become anxious/fearful, and these kinds of remedial diets do not address the root cause unless a nutritional deficiency in the regular food has been proven. Catnip can be a great feline calmer, and Feliway spray can work wonders for some cases.

For many dogs, a bandanna with a few drops of lavender oil on it tied around the neck can be calming, especially when riding in the car.

Visit Dr. Fox's website at DrFoxVet.com.)

(Send all mail to animaldocfox@gmail.com or to Dr. Michael Fox in care of Universal Uclick, 1130 Walnut St., Kansas City, MO 64106. The volume of mail received prohibits personal replies, but questions and comments of general interest will be discussed in future columns.

DEAR DR. FOX: A year ago, I decided to take care of a stray cat in my backyard. When I saw him running around with a piece of bread I had thrown out for the birds, I knew there was a problem.

I would put food down in my garage, and it would be gone the next day. This went on for several days until I finally got to meet him. I call him Jack.

He's a very handsome rogue with beautiful tortoiseshell coloring. After weeks of working with him, I was able to get him close enough to me to sniff the fingers of my outstretched hand. All I wanted to do was to help the little fellow make it through the winter, and I did.

Jack has been with me ever since. But there are two problems:

First, he's a feral cat who has pretty much reverted back to the wild.

Second, he has worms. I've observed this from his insatiable appetite and his hyperactive behavior. I also saw a worm he passed.

I've called several local animal clinics, and they all want me to bring Jack in for tests and the works. I can't afford to do this. Also, I could never get Jack into a pet carrier, and I am afraid of how he would react around strangers. Have I any other alternatives? I'd like to be able to make him well by adding something to his food. -- J.M., Poughkeepsie, N.Y.

DEAR J.M.: You do not give enough details in your letter as to what kind of worm you saw Jack pass. If it was long and thin, it could be a Toxocara roundworm. If it was a white, oblong, rice-grain-sized wiggly thing, it's a tapeworm segment. If that's the case, he'll need to be treated for fleas, which carry tapeworm eggs.

While it may seem shocking that no veterinary hospital will give you some worming medicine to put in his food, without a stool sample and/or a sample of the worm you saw, the proper treatment cannot be determined. Get these samples and you won't need to take Jack in unless it turns out he requires flea treatment. Not having had a rabies vaccination may make these animal clinics worry about dealing with Jack, and I urge you to rent a humane trap and get someone to help you catch him and take him in. He may need to be neutered, which will make him easier to handle. If you have a spare room, put him in there when he's given a clean bill of health, and he may soon become sociable.

FLEA AND TICK PREVENTION

Television and other media outlets foment public fears of fleas and ticks to sell various products to keep these pests off dogs and cats. Not all are safe, and none prevent these insects from biting the animals and possibly causing hypersensitivity or infection. Manufacturers, along with many veterinarians, are marketing these products as a preventive measure. This clever marketing ploy is adding to the numbers of animals having adverse reactions, including seizures and even death. Check DrFoxVet.com for more adverse reactions to flea medications. Also check the website for effective and safe methods of flea and tick control, and consider products like PetzLife's herbal spray, diatomaceous earth and daily flea comb monitoring.

The Environmental Protection Agency had no less than 44,000 reports of adverse reactions to topical anti-flea and -tick drugs just in the year 2008. Pet owners should not support this pharmaceutical industry profiteering insanity. I advise against using all non-herbal products, such as Bayer's new long-acting Seresto flea collar. The collars contain a nicotine chemical (imidacloprid) that can cause seizures, thyroid gland damage, mutations, abortions and birth defects. The collars also have a pyrethrin chemical that can cause nausea, vomiting and seizures. I worry for the humans petting animals with these chemicals seeping over the animals' skin, and of the animals grooming themselves and each other. Sheer insanity.

(Send all mail to animaldocfox@gmail.com or to Dr. Michael Fox in care of Universal Uclick, 1130 Walnut St., Kansas City, MO 64106. The volume of mail received prohibits personal replies, but questions and comments of general interest will be discussed in future columns.

Visit Dr. Fox's website at DrFoxVet.com.)

DEAR DR. FOX: I enjoyed your article about the cost of wart removal. My yorkiepoo had one under his jaw by his neck. The vet charged me $1,000 to remove it. I was upset, but the doctor said I should have it removed. My dog got another one by his eye, and I put Polysporin on top of it, and within two days it was gone. Some vets know how much you love your pets and will take advantage if you are a sucker. -- P.H., Brick, N.J.

DEAR P.H.: I share your incredulity that some members of the veterinary profession have evolved in parallel with some human doctors who put profits before ethics. Some even put their patients at risk by doing unwarranted -- but profitable -- diagnostic tests and "supportive" and "preventive" procedures.

A thousand dollars to remove a wart -- that's a record breaker! Can any reader top that?

DEAR DR. FOX: Six months ago, I rescued a young male cat from the city street near my apartment. I thought he would be a good companion for our 5-year-old male cat who is home alone during the day, and he is indeed very sweet.

I took the new kitty to be neutered and was told he was in good condition considering he came from the street. He and our older cat have gotten to be very close and enjoy playing together. The problem is, these cats wake us up early in the morning, and it's killing us.

They tear through the apartment, running up and down the hall, tackling each other. They scratch and knock things off the dressers, as if they were trying to make as much noise as possible.

I feed them consistently at 9 a.m. (when I like to get up) and 10 p.m., yet they wake us up at 6 a.m. I am at my wits' end, and I am considering giving up the second cat. I know our older cat likes the companionship, but the lack of sleep is ruining our lives. And I cannot bear the idea of letting the cats win by feeding them whenever they wake up. If I close them out of the room, they just scratch on the door, which is even worse. Please help. -- S.W., Brooklyn, N.Y.

DEAR S.W.: Sleep interruption and sleep deprivation are serious issues, and by all accounts, a common malady -- not just among those who live with early-to-rise cats. Cats love to make noise when they are playing together, and I think it would be tragic if they have to part forever. Is there no separate room with lightproof, covered windows where they could spend the night together? You could try making the bathroom cozy for them and shut them in with soft (i.e. quiet) toys to play with, along with food, water, catnip and all breakable things put away. As a last resort, there may be another person in your apartment complex who would take the new cat and they could get together for playtime early evenings and weekends. If you are feeding them only at 9 a.m. and 10 p.m. (a dog's feeding schedule), you need to change that to at least four smaller feedings daily.

DEAR DR. FOX: I need help in welcoming a cat to my household. I have two dogs: a 2-year-old Lhasa apso female and a 5-year-old male corgi/sheltie/beagle-mix. The dogs bark enthusiastically at every cat they see.

My father will be coming to live with us in an apartment in the basement of our home. He will be bringing his 12-year-old cat, Harry, who is in good health. The cat has always gone from inside the house to outdoors several times a day. He has never used a litter box. I expect this routine to continue when Harry comes to our house.

My dogs have visited the cat at my father's current home. They bark and bark. Harry attempts to go outside and disappear until the dogs are gone, or he hides inside the house. He previously lived peacefully with my father's late lab mix.

Harry will have an entrance to the house separate from the dogs. I should be able to keep the dogs out of the cat's living area, but I am afraid they will bark nonstop to alert us that there is a cat in the house. I fear, too, Harry will run away from his new home with these dogs in it.

How can I get the animals to exist harmoniously together? -- K.L., Woodbridge, Va.

DEAR K.L.: First, I do not condone letting cats wander outdoors unless they are in an escape-proof enclosure with protection from the weather if they are left out. Alternatively, your father should get his cat used to wearing a harness, perhaps initially also with a collar and double leash.

My fear is that in a new place and hearing the dogs bark, the cat will try to get out and probably set out for his old home. It is imperative to keep him indoors for at least four to six weeks, installing extra screen doors for security and never letting him out except on leashes or into a secure cat house.

(Send all mail to animaldocfox@gmail.com or to Dr. Michael Fox in care of Universal Uclick, 1130 Walnut St., Kansas City, MO 64106. The volume of mail received prohibits personal replies, but questions and comments of general interest will be discussed in future columns.

Visit Dr. Fox's website at DrFoxVet.com.)