Showing posts with label dogs. Show all posts
Showing posts with label dogs. Show all posts

Thursday, October 4, 2007

The Difficulty In Assessing Dog Smarts

Our understanding of dog intelligence has come along way and certainly immense comprehensive strides have been made since the days of Rene Descartes (the renowned French philosopher, scientist and mathematician) who pioneered the school of thought that proposed animals were nothing more than biological machines!

According to Descartes, observed animal behavior amounted to nothing more than a reflex response to external stimuli, much in the same way as when a bare-footed person steps on a sharp object such as a thumb tack when they immediately withdraw the affected foot without any apparent conscious decision.

Descartes' views on animal intelligence, or more accurately put, lack thereof, not only denied the existence of intelligence in animals they propounded that animals were not self-aware and thus were incapable of emotional range or being able to consciously register pain. Being an extremely influential person of his time Descartes opinions went a long way in justifying undue cruelty to animals be it through experimentation or otherwise.

However thankfully those barbaric days are long behind us and today it is the rare individual who still believes that animals are incapable of thought or emotions. That said though, there's still a ways to go before we can accurately qualify and quantify animal intelligence. Ironically this is perhaps so for the simple reason that since we measure the intelligence of different species against that of ourselves we are inherently practicing anthropomorphism (attributing human qualities and characteristics to non-human subjects, be they animals or inanimate objects), because we innately identify and attribute higher value to those behaviors that somehow mimic ours or make some form of sense to us.

The Anthropomorphism Factor

The inherent flaw in this approach is that it overlooks the reason why the various species of animal behave the way they do; namely that their brains are connected and wired in a pattern best designed to perpetuate the success of that species within its designated environmental niche; a niche which is invariably very different to that occupied by people.

This is not to say that humans are not smarter than any other (as far as we know) animal on earth, but it just means that we have to concede the fact that when we measure the intelligence of other species against our own, by necessity anthropomorphism is going to be a factor. Perhaps this is no more evident than in the assessment of dog intelligence, most specifically, the difference of intelligence in the various dog breeds.

Perhaps the most cited authority on dog intelligence is the excellent book by Stanley Coren (click Here). In Dr. Coren's book which is based on his observations and research Coren asserts that there are three kinds of intelligence displayed by dogs which include the following: adaptive intelligence (the ability to solve problems); instinctive intelligence (characteristics and behaviorisms that are genetically driven); and lastly working / obedience intelligence which refers to the ability to obey and carry out instructions.

With particular emphasis on obedience intelligence, Coren came up with a list describing the most intelligent dog breed first, running down to the least intelligent dog breed, based on the observations of some 200 dog obedience judges and trainers.

However Dr. Coren's study has generated a number of vocal criticisms of which perhaps the most pertinent object to the sample size of the study as well as to the subjectivity of its approach. Many claim that 200 is far too small a number to result in meaningful conclusions and that furthermore any conclusions were inherently biased because they were based on the subjective observations of the various dog trainers.

According to the study, the dog that topped the list as the smartest canine was the Border Collie and the dog that was bottom of the list was the Afghan Hound. Much as Coren rightfully points out that the measure of intelligence is not limited to any one factor, one however, cannot but help get the impression that more value was attributed to a dog's ability to carry out instructions (obedience/ working intelligence) than was accorded to the other parameters of intelligence.

Comparative studies and experiments have revealed that dogs exhibit surprisingly poor problem-solving abilities compared to their wild counterparts (wolves, coyotes, jackals, dingos etc). Research conducted on wolves illustrated that they generally learn through observation in contrast to dogs that learn through repetition. Such cognitive insightfulness appears to be inherent in the wild forms of canid which may explain why tamed individuals of those wild canids are notorious for escaping their pens and kennels!

Though great progress has been made in understanding dog intelligence evidently there is still much to be learned and much we still don't know.

Sunday, September 9, 2007

Dog Domestication: Did The Wolf Tame Itself To Eventually Evolve Into The Dog?

Popular thinking has it that the humans domesticated the wolf about 15,000 years ago in the Mesolithic period when permanent settlements were becoming all the rage. In theory this sound good and well after all the dog is a descendant of the wolf and indeed the two canids (both come from the family Canidae) can interbreed. In fact it is on this basis that some argue that the dog is really a subspecies of the wolf. Although it is instinctive to assume that man did indeed tame the wolf which tamed animals then eventually evolved into the domesticated dog, there is a gaping flaw in this theory! The flaw is that this theory assumes that Mesolithic humans had the time or the intelligence to invest in a selective breeding program that aimed to create a tamer wolf; this would have necessarily meant that those people had hundreds of tame wolves with which to select desired traits from…a notion that is simply preposterous!
Click Below For Full Article

Wednesday, August 29, 2007

Commercial Dog Food Could Be Poisoning Your Dog!

If you are a dog owner you're probably aware of the recent pet food scandal that has rocked the nation, resulted in several pet deaths, hundreds of animals falling mysteriously ill and the nationwide recall of 60 million packages of dog food products (and counting) as well as other pet foods!

The Culprit

Melamine: This is the substance at the center of the pet food poison scandal. Pure melamine is used to make plastics and fertilizer so how the heck could it make the transition into dog food? Well the story begins in China…kind of.

Animal feed producers in China have apparently for some time routinely supplemented their feed with melamine to artificially boost the protein content (which translates into more profit). Protein readings are done by assessing the nitrogen levels of the feed and guess what? Melamine has a high nitrogen content!

Unfortunately this sordid tale gets worse. As if adding poisonous melamine to your dog's food was not bad enough another toxic ingredient is routinely added to Chinese animal feed products. This substance is known as cyanuric acid. In the United States this stuff is commonly used to disinfect swimming pools!

Investigators looking into the hundreds of pet food poison related deaths now believe that the combination of those two ingredients in commercial dog food and other pet food synergistically elevated the toxins to the point where they became lethal to pets.

The Dirty Secret Close To Home

Although American food safety regulators are pinning the blame on pet food contaminated with Chinese animal feed products, the alarming truth is that dog food manufactured in the USA is also toxic to your pet!

Commercial dog food manufactured in the US contains no less than 6 deadly chemicals that have been banned as unfit for human consumption because they cause:

Hair Loss (fur loss);

Kidney Disease;

Liver dysfunction;

Stomach cancer;

Blindness;

Leukemia; and

Skin cancer, to name but a few! The substances that cause these problems are found in preservatives…

Oh But I Always Use Preservative Free Dog Food!

You may think that your dog is safe and healthy because you only insist on buying preservative free dog food. Well dog manufacturers have found a legit way around that too! Many dog foods labeled as preservative free in fact contain preservatives because the manufacturers exploit a loophole whereby they do not have to list any preservative that they themselves did not add.

And unfortunately many preservatives are added to pet foods at the rendering plant well before the meat is ever sent to the manufacturer. One of the most widely used and most powerful preservatives also happens to be one of the most toxic! It is called ethoxyquin (EQ) and you aren't going to see it listed on your dog food label anytime soon (even though it is in that "preservative free" dry pet food you love to buy) because the manufacturer has no legal obligation to list it.

Although ethoxyquin is permitted in pet food, workers exposed to this substance showed symptoms similar to those of people exposed to agent orange (poisonous herbicide used by the US government in Vietnam War that caused cancer and other diseases).

Your Dog Is Eating Dead Dogs And Dead Cats!

Perhaps the sickest part of this sick tale is that euthanized (put down) dogs and cats are recycled as chow for your pet! The city of angels (Los Angeles) is known for the devilish practice of recycling approximately 200 tons of dead cats and dogs each month into pet food!

Arrrgghh…disgusting huh?

Still it gets worse; poisonous disinfectants and denaturing chemicals are used to treat those recycled dead animals and "render them safe" for your dog's consumption, not to mention the fact that the toxin used to kill those animals (sodium pentobarbital) can withstand the heat used in the denaturing process.

Bottom line: If you love your dog and want to see him/her live to a ripe healthy old age, perhaps it is time you considered alternative means of nutrition!

Dog Breed

Saturday, August 25, 2007

Dog Evolution

Around 54 to 38 million years ago a new line of meat-eating mammals evolved. They became known as the carnivores and were distinct from all other meat eaters for the fact they possessed a unique feature – four carnassial teeth. Only carnivorous mammals possess teeth that adapted from a crushing chewing mechanics to a tearing and ripping mechanism facilitating cutting through flesh.

Modern day carnivores are believed to have evolved from two separate ancestral lines at some point:

1. Hesperocyon which habited North America 38-26 million years ago. This was perhaps the first genus to have developed an inner-ear anatomy a feature characteristic of the canine family.

2. Amphicyon which dominated the Eurasian continent for millions of years inter-lapping the same time frame as Hesperocyon. However somewhere along the line it is believed that the Amphicyon line died out.

Around 26-7 million years ago during the Miocene era Hesperocyon evolved into 42 different genera of canines with dog-like features of which Leptocyon (12 million years ago) an evolutionary descendant of Hesperocyon eventually evolved into the Canidae from whence came the modern canids which include wolves, foxes, jackals and hyenas.

Interestingly enough up until 10-20 million years ago bears and dogs were actually members of the same family before their evolution diverged to continue along separate paths. The ancestors of dogs are known to have evolved in response to climatic changes as well as changes to the environment. As tropical forests were superseded by vast areas of wide open savannah and steppes, so came into being the large herds of herbivores that are still present today in Africa.

Where beforehand the dog may have been a solitary hunter with the change in the environment it became expedient for the dog to evolve into a pack animal with a well formed social stratum. In this way dogs were able to successfully hunt and tackle the much larger prey that was characteristic of the grazing herds of herbivore. This pack mentality is still evident in the domestic dog as witnessed by roving packs of stray dogs in urban areas.

It is this innate ability of dogs to develop social relationships (inherited from wolves from which the domestic dog was bred) that is the basis of their success as a species!


Dog Breeds