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What Makes Bloodhounds Such Great Tracking Dogs?

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Reader rccola20 wrote in to ask, "Are bloodhounds really that much better at tracking than other dog breeds?"

Bloodhound image via Shutterstock

You always see them hunting down fugitives in the movies, but is that just Hollywood, or are bloodhounds really the best smellers around?

Bloodhounds are pretty much the best in the business. Sometimes called noses with paws, their skills as trackers come from the high number of olfactory receptors — or “scent cells" — tucked up in their wet noses, which detect odor molecules. A human's olfactory membrane is about the size of a postage stamp and contains 5 million receptors. A large dog like a German Shepherd, meanwhile, has a larger membrane and about 225 million receptors.

The scent hounds, a group of dogs that includes foxhounds, beagles, catahoulas, blood hounds and other breeds, blow the rest of the pooches and their masters out of the water. These dogs have wide, deep nasal cavities that can accommodate sizable olfactory membranes and large numbers of odor-detecting cells. The little beagle, often no more than half the size of a German Shepherd, has the same number of olfactory receptors as the larger dog. The bloodhound is the grand champ of scent cells and weighs in with 300 million of them, the most in the canine family.

Scent cells aren't the whole story, though, and the breed has a few other attributes that help when it comes to tracking. Their droopy ears and wrinkly skin help collect odor molecules and sweep them towards the dogs' noses. Their muscular necks and shoulders let them keep their nose to the ground for long distances without getting fatigued. Bloodhound handlers also say that the breed is a joy to work with. The dogs interact well with people, are eager to please, and are focused in training and on the job.

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Animals
Owning a Dog May Add Years to Your Life, Study Shows
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We've said that having a furry friend can reduce depression, promote better sleep, and encourage more exercise. Now, research has indicated that caring for a canine might actually extend your lifespan.

Previous studies have shown that dog owners have an innate sense of comfort and increased well-being. A new paper published in Scientific Reports and conducted by Uppsala University in Sweden looked at the health records of 3.4 million of the country's residents. These records typically include personal data like marital status and whether the individual owns a pet. Researchers got additional insight from a national dog registry providing ownership information. According to the study, those with a dog for a housemate were less likely to die from cardiovascular disease or any other cause during the study's 12-year duration.

The study included adults 40 to 80 years old, with a mean age of 57. Researchers found that dogs were a positive predictor in health, particularly among singles. Those who had one were 33 percent less likely to die early than those who did not. Authors didn't conclude the exact reason behind the correlation: It could be active people are more likely to own dogs, that dogs promoted more activity, or that psychological factors like lowered incidences of depression might bolster overall well-being. Either way, having a pooch in your life could mean living a longer one.

[h/t Bloomberg]

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8 Tricks to Help Your Cat and Dog to Get Along
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When people aren’t debating whether cats or dogs are more intelligent, they’re equating them as mortal foes. That’s a stereotype that both cat expert Jackson Galaxy, host of the Animal Planet show My Cat From Hell, and certified dog trainer Zoe Sandor want to break.

Typically, cats are aloof and easily startled, while dogs are gregarious and territorial. This doesn't mean, however, that they can't share the same space—they're just going to need your help. “If cats and dogs are brought up together in a positive, loving, encouraging environment, they’re going to be friends,” Galaxy tells Mental Floss. “Or at the very least, they’ll tolerate each other.”

The duo has teamed up to host a new Animal Planet series, Cat vs. Dog, which airs on Saturdays at 10 p.m. The show chronicles their efforts to help pet owners establish long-lasting peace—if not perfect harmony—among cats and dogs. (Yes, it’s possible.) Gleaned from both TV and off-camera experiences, here are eight tips Galaxy and Sandor say will help improve household relations between Fido and Fluffy.

1. TAKE PERSONALITY—NOT BREED—INTO ACCOUNT.

Contrary to popular belief, certain breeds of cats and dogs don't typically get along better than others. According to Galaxy and Sandor, it’s more important to take their personalities and energy levels into account. If a dog is aggressive and territorial, it won’t be a good fit in a household with a skittish cat. In contrast, an aging dog would hate sharing his space with a rambunctious kitten.

If two animals don’t end up being a personality match, have a backup plan, or consider setting up a household arrangement that keeps them separated for the long term. And if you’re adopting a pet, do your homework and ask its previous owners or shelter if it’s lived with other animals before, or gets along with them.

2. TRAIN YOUR DOG.

To set your dog up for success with cats, teach it to control its impulses, Sandor says. Does it leap across the kitchen when someone drops a cookie, or go on high alert when it sees a squeaky toy? If so, it probably won’t be great with cats right off the bat, since it will likely jump up whenever it spots a feline.

Hold off Fido's face time with Fluffy until the former is trained to stay put. And even then, keep a leash handy during the first several cat-dog meetings.

3. GIVE A CAT ITS OWN TERRITORY BEFORE IT MEETS A DOG.

Cats need a protected space—a “base camp” of sorts—that’s just theirs, Galaxy says. Make this refuge off-limits to the dog, but create safe spaces around the house, too. This way, the cat can confidently navigate shared territory without trouble from its canine sibling.

Since cats are natural climbers, Galaxy recommends taking advantage of your home’s vertical space. Buy tall cat trees, install shelves, or place a cat bed atop a bookcase. This allows your cat to observe the dog from a safe distance, or cross a room without touching the floor.

And while you’re at it, keep dogs away from the litter box. Cats should feel safe while doing their business, plus dogs sometimes (ew) like to snack on cat feces, a bad habit that can cause your pooch to contract intestinal parasites. These worms can cause a slew of health problems, including vomiting, diarrhea, weight loss, and anemia.

Baby gates work in a pinch, but since some dogs are escape artists, prepare for worst-case scenarios by keeping the litter box uncovered and in an open space. That way, the cat won’t be cornered and trapped mid-squat.

4. EXERCISE YOUR DOG'S BODY AND MIND.

“People exercise their dogs probably 20 percent of what they should really be doing,” Sandor says. “It’s really important that their energy is released somewhere else so that they have the ability to slow down their brains and really control themselves when they’re around kitties.”

Dogs also need lots of stimulation. Receiving it in a controlled manner makes them less likely to satisfy it by, say, chasing a cat. For this, Sandor recommends toys, herding-type activities, lure coursing, and high-intensity trick training.

“Instead of just taking a walk, stop and do a sit five times on every block,” she says. “And do direction changes three times on every block, or speed changes two times. It’s about unleashing their herding instincts and prey drive in an appropriate way.”

If you don’t have time for any of these activities, Zoe recommends hiring a dog walker, or enrolling in doggy daycare.

5. LET CATS AND DOGS FOLLOW THEIR NOSES.

In Galaxy's new book, Total Cat Mojo, he says it’s a smart idea to let cats and dogs sniff each other’s bedding and toys before a face-to-face introduction. This way, they can satisfy their curiosity and avoid potential turf battles.

6. PLAN THE FIRST CAT/DOG MEETING CAREFULLY.

Just like humans, cats and dogs have just one good chance to make a great first impression. Luckily, they both love food, which might ultimately help them love each other.

Schedule the first cat-dog meeting during mealtime, but keep the dog on a leash and both animals on opposite sides of a closed door. They won’t see each other, but they will smell each other while chowing down on their respective foods. They’ll begin to associate this smell with food, thus “making it a good thing,” Galaxy says.

Do this every mealtime for several weeks, before slowly introducing visual simulation. Continue feeding the cat and dog separately, but on either side of a dog gate or screen, before finally removing it all together. By this point, “they’re eating side-by-side, pretty much ignoring each other,” Galaxy says. For safety’s sake, continue keeping the dog on a leash until you’re confident it’s safe to take it off (and even then, exercise caution).

7. KEEP THEIR FOOD AND TOYS SEPARATE.

After you've successfully ingratiated the cat and dog using feeding exercises, keep their food bowls separate. “A cat will walk up to the dog bowl—either while the dog’s eating, or in the vicinity—and try to eat out of it,” Galaxy says. “The dog just goes to town on them. You can’t assume that your dog isn’t food-protective or resource-protective.”

To prevent these disastrous mealtime encounters, schedule regular mealtimes for your pets (no free feeding!) and place the bowls in separate areas of the house, or the cat’s dish up on a table or another high spot.

Also, keep a close eye on the cat’s toys—competition over toys can also prompt fighting. “Dogs tend to get really into catnip,” Galaxy says. “My dog loves catnip a whole lot more than my cats do.”

8. CONSIDER RAISING A DOG AND CAT TOGETHER (IF YOU CAN).

Socializing these animals at a young age can be easier than introducing them as adults—pups are easily trainable “sponges” that soak up new information and situations, Sandor says. Plus, dogs are less confident and smaller at this stage in life, allowing the cat to “assume its rightful position at the top of the hierarchy,” she adds.

Remain watchful, though, to ensure everything goes smoothly—especially when the dog hits its rambunctious “teenage” stage before becoming a full-grown dog.

Cat vs. Dog Airs on Saturdays at 10 p.m. on Animal Planet

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