A toy dog is a very small dog kept as a pet, as compared to a very small working dog, although both pet and working dogs can be very small.
When an all-breed association or kennel club divides dog breeds into groups for purposes of competition, the Toy Group contains most of the smallest dog breeds in the club's registry.
The terms "teacup" or ("tea cup") and "tiny toy," have increasingly come to be used to describe adult dogs that are very small..
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