Rhylo
Rhylo was the female pet dog of Keyla, a mysterious woman that Jonathan Archer met on Risa in 2152 and who turned out to be a disguised Tandaran. Rhylo's body was primarily devoid of fur, with the exception of her head, , and tail.

Keyla claimed to have adopted Rhylo when she was a puppy. Prior to their visit to Risa, Rhylo had been "cooped up for weeks." This was an excuse Keyla gave for Rhylo's actions when the dog apparently ran off and somehow appeared on the deck of Archer's villa, where she started a growling match with Archer's dog, Porthos. ()

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Dogs