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Creationism/Evolution
See other Creationism/Evolution Articles

Title: Cats are better than Dogs
Source: The Independent
URL Source: http://www.independent.co.uk/enviro ... nary-perspective-10454590.html
Published: Aug 14, 2015
Author: Tom Bawden
Post Date: 2015-08-14 17:25:55 by Willie Green
Keywords: None
Views: 2205
Comments: 6

It’s the debate that has long divided animal lovers. Now scientists have confirmed that cats really are better than dogs – at least from an evolutionary perspective.

A groundbreaking study of 2,000 ancient fossils reveals that felids – the cat family – have historically been much better at surviving than the “canid” dog clan, and often at the latter’s expense.

The research finds that cats have played a significant role in making 40 dog species extinct, outcompeting them for scarce food supplies because they are generally more effective hunters. But researchers found no evidence that dogs have wiped out a single cat species.

The dog family – which includes the wolves from which today’s domesticated dogs are descended – originated in North America about 40 million years ago and reached a maximum diversity around 20 million years later, when there were more than 30 species on the continent. At that point, the cat family arrived from Asia.

“The arrival of cats to North America had a deadly impact on the diversity of the dog family. We usually expect changes in climate to play the overwhelming role in the evolution of species. Instead, competition among different carnivore species proved to be even more important for the dogs,” said the report’s lead author, Dr Daniele Silvestro, of the University of Lausanne in Switzerland.

The influx of cats prompted a period of dramatic decline among the dog clan. This has left North America with just nine species of wild dog today, comprising different variations of wolves and foxes, according to the fossil analysis published in the journal PNAS.

Dr Silvestro says it is unclear exactly why, when times were tough, the cats were able to see off dogs so comprehensively. But he believed it could be something to do with the retractable claws that ancient cats have passed down to their domesticated descendants, but which dogs don’t have.

Millions of years ago, some dog species, such as wolves, were effective killing machines, chasing down their prey at high speed and devouring it. All surviving dog species fall into this “runner” camp.

But other dog species ambushed their prey in a manner similar to the cat family. However, these dogs weren’t as good as the cats at this technique – and all the canid species who used it are now extinct.

Dr Silvestro explained: “The cats have retractable claws which they only pull out when they catch their prey. This means they don’t wear them out and they can keep them sharp. But the dogs can’t do this, so they are at a disadvantage to the cats in an ambush situation.”

The evolutionary success of carnivorous animals is strongly linked to their ability to obtain food, meaning that there can be significant competition for prey when there is insufficient supply for the population.

“Felids must have been more efficient predators than most of the extinct species in the dog family,” the report concluded.

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#1. To: Willie Green (#0)

Interesting.

Si vis pacem, para bellum

Stoner  posted on  2015-08-14   17:39:17 ET  Reply   Trace   Private Reply  


#2. To: Willie Green (#0)

Here ya go, cat lover.

misterwhite  posted on  2015-08-14   17:58:15 ET  (1 image) Reply   Trace   Private Reply  


#3. To: Willie Green (#0)

Dogs...

Freckles - the Cocker / Spaniel mix (dog) was pretty dumb.
Deer in the back yard? Would slam her head into the
back sliding glass door. Pretty dumb.

But Fluffy the cat would go after the moles and other rodents
in the back yard... Cool cat...

Chuck_Wagon  posted on  2015-08-14   18:09:49 ET  (1 image) Reply   Trace   Private Reply  


#4. To: Willie Green (#0)

Their thought processes are so wildly different they can't be compared.

For example,ever heard of a "watch cat" or a "guard cat"?

And no,I am NOT talking about cats that watch people steal your stuff while guarding their kittens.

Also,ever try to train a cat to do tricks that don't involve eating or sleeping?

Why is democracy held in such high esteem when it’s the enemy of the minority and makes all rights relative to the dictates of the majority? (Ron Paul,2012)

sneakypete  posted on  2015-08-14   19:05:01 ET  Reply   Trace   Private Reply  


#5. To: sneakypete (#4)

Also,ever try to train a cat to do tricks that don't involve eating or sleeping?

Willie Green  posted on  2015-08-14   19:45:47 ET  (1 image) Reply   Trace   Private Reply  


#6. To: misterwhite (#2)

When cat haters grow up, they demonically turn into leftists unless something magical happens to them to turn them into humans.

Don  posted on  2015-08-14   22:14:44 ET  Reply   Trace   Private Reply  


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