Beagle
Porthos, a Beagle
For the ships named Beagle, please see HMS Beagle, the SS Beagle, and the USS Beagle.
The Beagle was a breed of domesticated dog, most likely originating from England, on Earth.
During the 22nd century, Captain Jonathan Archer owned a Beagle named Porthos, which he took with him during his ten-year mission on Enterprise. (ENT: "Broken Bow", "These Are the Voyages...")
Other than Porthos, Doctor Phlox had not treated any other beagles, (once mistakenly calling Porthos a "bugle",) but was able to find medical information on similar chordata in his sub-mammalian database. (ENT: "A Night in Sickbay")
In the alternate reality, Montgomery Scott attempted to prove his theories about interplanetary transportation by beaming Admiral Archer's prize Beagle. The dog was never seen again. (Star Trek)