It was this very question that got Glitch’s owner, Karl Sparham, interested in donating in the first place. Cruising a Reddit forum one day, he stumbled upon a thread about pet blood donations that sparked a worry in his mind.
“There was a comment in which a user was talking about their dog who had been involved in an accident, and their vet didn’t know the dog’s blood group,” Sparham told The Dodo. “He effectively had to choose what blood to transfuse at random, which could have had fatal consequences.”
There are five major dog blood groups, including a universal donor, the equivalent of the “O negative” blood type in humans. Greyhounds are frequently used as canine blood donors, as the breed tends to have the type of blood that can be used for all dogs with minimal reactions.