Bae Bae, formerly Gunther, is the name of the Holt family dog. She is a fawn, short-haired bull terrier with a snub nose, perky ears, and a red collar.
Her name was changed to honor the death of a dog belonging to one of Voltron's recording studio's staff. He passed away due to bone cancer after recording Season 2; while in-show, Bae Bae continues to live on.
Bae Bae is shown to be a very loyal dog, remembering Pidge and Matt after not seeing them for years.