You can discuss this suggestion on the talk page.
The Alfa 177 canine was a species of dog native to the planet Alfa 177. It was very similar to an Earth dog, with the exception of a horn on its head, a scaled backbone, and thin gold antennae sprouting from its head.
In 2266, a specimen of this species was brought aboard the USS Enterprise. After the transporter became infected with a yellow magnetic dust from the planet, the crew unknowingly tried to beam the canine back down to the surface of Alfa 177. The animal rematerialized as two different dogs: one, very gentle and shy, and the other very angry and dangerous, who would try to bite anyone who came near it, so that it had to be put in a box in the transporter room. After the crew came to believe that they had repaired the transporter, they tried reintegrating the two. Although the procedure itself appeared to be a success, the animal was found dead, possibly due to the shock of reintegration. (TOS: "The Enemy Within")
Background information Edit
This animal was originally to have been "a small, mild sheep-like creature," described that way in the first draft story outline for "The Enemy Within". However, in a memo from Robert Justman to Gene Roddenberry (dated 8 April 1966), Justman admitted, "I feel we don't need this creature for two reasons. Firstly, I don't know how we create this creature, unless we take a dog and shave its hair off in some way or other to make it look different." Justman's other motive for being reluctant to accept the idea of the animal was that he felt its duplication by the transporter revealed to the Enterprise crew too early that the transporter was producing doubles of whichever individual went through it, a fact Kirk and Spock were attempting to hide from the crew later in the outline.
In the revised story outline of "The Enemy Within", this animal was initially described as "a small, gentle, dog-like creature." The description of the animal in the final draft script of "The Enemy Within" was exactly the same as that apart from omitting the word "gentle."
The headpiece of the dog's costume was used for the sequence when the dog rematerialized dead in the failed transporter attempt and was later reused as one of Trelane's trophies.
According to Star Trek Maps (p. 22), the species name given to this animal was Canis Alfa.