Here is more from WikiAnswers contributors:
K-9 is an abbreviation for the species, canine. I.e., dogs in general. Probably the military was the first to use this abbreviation since they even have their own ways of writing today's date, eliminating the slashes between the month, year and day. The whole idea behind this is to (believe it or not) save ink in the days when typewriters were used and the ribbons were made of cloth, saturated with the ink. It saves wear and tear on the ribbons, time spent typing and because during wartime, the available supply was an issue.
it means nothing it just stands for DOG.
K9 refers to a dog. K6 refers to a mountain in Pakistan
pitbull is stronger than k9
The term "K9" is typically used in reference to police or military dogs, not guide dogs.Added:Actually, the term "K9" comes from the Latin word for dog, canine. I think it would be fine if you referred to a guide dog as a K9. But it would sound a little redundant.
dog teeth
K9 in america - usually refers to a working dog - such as a Police dog, or 'sniffer' dog. It's short for 'canine' - a general term for a dog.
"K-9" is a bastardization of "Canine". K-9 units usually consist of a Handler or dog trainer and a police dog.
Dog k9(carnivore)
K9
Dog k9(carnivore)
Lost in Space , Star Trek ,
all dogs are considered canines or k9 as you put it
K9 is only a abbreviation for "CA-NINE" which is a name for dogs; not a number letter classification.