David Sean Murray is a major character in The Mimic, the third story from Tales from the Pizzaplex 6: Nexie. He was Edwin Murray's young son and was initially referenced in The Storyteller.
You can add as many animals as you like in as many breeds as you like. The only rule is do NOT be weird about "spirit animals;" see here for more info: https://www.wellandgood.com/spirit-animal-native-american/
