The average temperature of a toy dog, or
teacup dog for that matter, is around 100 degrees Fahrenheit, so many kings and lords would have these tiny dogs as a means to stay warm in the winter.
The different opinions on the
matter are ones that state that
teacup dogs in fact don't even exist; they are instead just a different name
for the already established miniature
dogs, toy
dogs, and pocket - size
dogs.