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Schematic anatomy of the ear. In dogs, the ear canal has a "L" shape, with the vertical canal (first half) and the horizontal canal (deeper half, ending with the eardrum) The frequency range of dog hearing is between 16–40 Hz (compared to 20–70 Hz for humans) and up to 45–60 kHz (compared to 13–20 kHz for humans), which means that dogs ...
The principal registry for Border Collies in the United States is the American Border Collie Association (ABCA), which is dedicated to the preservation of the traditional working dog. [40] The breed was also recognised in 1995 by the American Kennel Club (AKC) after occupying the AKC's Miscellaneous Class for over 50 years.
The New Zealand Heading Dog is a New Zealand breed of working and herding dog derived from the Border Collie. The dogs are sturdy, long-legged and even-haired, and use their visual prowess, intelligence and quick movement to control sheep. They are generally black and white in colour, but may also be tan. [1]
Black and white Border Collie: Blenheim (Red-brown and white) Cavalier King Charles Spaniel: Piebald or pied (also called bicolor, tricolor, Irish spotted, Flashy, Patched, Tuxedo): any color or pattern coupled with white spotting. This can range anywhere from white toes and tail tip to a mostly white dog with color around the base of the ears ...
The ears of a Rough Collie are similar to a Shetland Sheepdog's, but larger. Furthermore, once seen, the contrast between the Rough Collie head and that of a Border Collie is immediately apparent, the latter having a considerably shorter muzzle and a more distinct stop between muzzle and forehead.
Chaser (April 28, 2004 – July 23, 2019) was a Border Collie with the largest tested memory of any non-human animal. Chaser worked with Professor John W. Pilley, at his home in Spartanburg, South Carolina, from eight weeks old, until Pilley's death in June 2018. Pilley spent that time training her in a formal research project.
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A study of another Border Collie, Chaser, documented that he had learned the names and could associate them by verbal command with over 1,000 words. [ 129 ] One study of canine cognitive abilities found that dogs' capabilities are similar to those of horses , chimpanzees , or cats . [ 130 ]