why does ostrich put head in sand
Dogs aren't known for their picky taste in food, but some pups go beyond the normal trash hunting and start rooting around in poop, whether it be their own or a friend's. Just why dogs exhibit this behavior is a scientific mystery. Only some dogs do it, and researchers aren't quite sure where the impulse comes from. But if your dog is a poop eater, it's nearly impossible to steer them away from their favorite feces. A new study in the journal, spotted by, presents a new theory for what scientists call "canine conspecific coprophagy," or dogs eating dog poop. In online surveys about domestic dogs' poop-eating habits completed by thousands of pet owners, the researchers found no link between eating poop and a dog's sex, house training, compulsive behavior, or the style of mothering they received as puppies. However, they did find one common link between the poop eaters. Most tended to eat only poop that was less than two days old. According to their data, 85 percent of poop-eaters only go for the fresh stuff. That timeline is important because it tracks with the lifespan of parasites. And this led the researchers to the following hypothesis: that eating poop is a holdover behavior from domestic dogs' ancestors, who may have had a decent reason to tuck into their friends' poop. Since their poop has a high chance of containing intestinal parasites, wolves poop far from their dens. But if a sick wolf doesn't quite make it out of the den in time, they might do their business too close to home. A healthier wolf might eat this poop, but the parasite eggs wouldn't have hatched within the first day or two of the feces being dropped. Thus, the healthy wolf would carry the risk of infection away from the den, depositing the eggs they had consumed away in their own, subsequent bowel movements at an appropriate distance before the eggs had the chance to hatch into larvae and transmit the parasite to the pack.
Domestic dogs may just be enacting this behavior instinctivelyБonly for them, there isn't as much danger of them picking up a parasite at home. However, the theory isn't foolproof. The surveys also found that so-called "greedy eaters" were more likely to eat feces than dogs who aren't quite so intense about food. So yes, it could still be about a poop-loving palate. But really, it's much more pleasant to think about the behavior as a parasite-protection measure than our best pals foraging for a delicious fecal snack. б
[h/t ] Share Print The English language is very rich and descriptive. Someone 'hiding their head in the sand, like an ostrich' is said to be foolishly ignoring their problem, while hoping it will magically vanish. The ostrich does many things, but hiding its head in the sand is not one of them. By The English language is very rich and descriptive. Someone hiding their head in the sand, like an ostrich is said to be foolishly ignoring their problem, while hoping it will magically vanish. The ostrich does many things, but hiding its head in the sand is not one of them. That doesn t stop this metaphor being evocative, and widely used by people in religious studies, political studies, management, military history, sport commerce and the financial markets. The ostrich is now found only in parts of Africa. It is the largest known bird, up to 2. 4 metres high and 155 kg in weight. Ostrich farmers are attracted to the durable ostrich leather, lovely saleable feathers, lean meat and extremely high feed-to-weight-gain ratio (3. 5 to 1, much better than cattle at 6 to 1). If scared, the ostrich can run at up to 65 kph. Its kick is powerful enough to bend 10 mm steel rods into right angles, and can easily break a human leg.
The ostrich uses its wings for balance (when running) and for courtship and display, when it s not batting its thick black eyelashes. Ostriches have three main strategies when attacked. They can run away, they can kick, or they can try to hide (eg, when nursing the eggs). When hiding, they will sometimes lay flat on the ground, with the long neck and head also on the ground. In the rippling heat haze of their native Africa, they can look just like a grassy mound. The myth that an ostrich will stick its head in the sand, in an effort to hide, may have begun with that great Roman thinker, Pliny the Elder (23-79AD). His real name was Gaius Plinius Secundus. Pliny was a man of intense curiosity about the world around him. His nephew, Pliny the Younger, wrote about him, He began to work long before daybreak. He read nothing without making extracts; he used even to say that there was no book so bad as not to contain something of value. In the country it was only the time when he was actually in his bath that was exempted from study. When travelling, as though freed from every other care, he devoted himself to study alone. In short, he deemed all time wasted that was not employed in study. In 79 AD, Mt. Vesuvius erupted - and covered and then preserved the city of Pompeii. While most people ran away from Vesuvius, Pliny went straight into the danger zone to look, learn and rescue survivors - and died in the attempt. In his honour, the most violent volcanic eruptions (such as Krakatoa) are called ultra-plinian. Before his death, Pliny had almost completed one of the earliest comprehensive encyclopaediae. His Natural History, in 37 books, was a remarkable attempt to summarise all the knowledge known to the Romans.
He claimed that he covered some 20,000 topics, which he partly got out of some 2,000 books, which in turn were written by some 100 authors. In fact, he was one of the first writers to acknowledge other authors from whom he quotes, and also one of the first to have a table of contents. His Natural History remained a fundamental source of knowledge to the West through the Dark Ages. So what did Pliny have to say of ostriches? In Book 10, Chapter 1, he writes, they imagine, when they have thrust their head and neck into a bush, that the whole of their body is concealed. Historians assume that this single sentence is the root of the myth about ostriches burying their head in the sand. There is one interesting ostrich behaviour that comes close to burying their head in the sand. When ostriches feed, they sometimes lay their head flat on the ground to swallow sand and pebbles. The hard grit helps them to grind their food in their crop. From a distance, the ostrich looks like it s burying its head in the sand. So will you ever see an ostrich with its head in the sand? Not naturally but it s a wacky world that we live in. On the globalgourmet. com homepage, Claire and Monty Montgomery describe how they visited the Brandywine Ostrich Ranch in Hemet, California, to see and eat ostrich. The owner, Chip Polvoorde, told them how he helped get an ostrich s head into a hole in the ground, for a movie shoot. Chip s friend first dug the hole, laced it with yummy ostrich food, and once the unsuspecting bird had shoved its head into the hole, held it there with sheer brute force until they got their shot. But I m sure that once the ostrich got loose, it was the camera crew that had to watch the birdie Tags:, 2018 Karl S. Kruszelnicki Pty Ltd
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