In some early concepts, Doug was planned to have an appearance almost identical to Pongo, with black ears and a red collar. Whether or not he was originally planned to be Pongo, before being altered, is not known at this time.
Role in the series
In the episode "Dog's Best Friend", Doug returns home from night shift before he gets glomped by the puppies. He tries to get some sleep but is woken from the sound of a human, which Dee-Dee and Dizzy adopted for Dylan. He tries to tell Dylan what a big responsibility a human is, but gets trampled when he mentions the park. Later, when the food machine is out of control, Doug tries to keep the situation calm but gets covered by bowls and kibble. Doug then advises Dylan on what to do about the human they have adopted.
In "Boom Night", Doug helps fit earmuffs on to the other pups during the titular event to protect her children from the disruptive sounds before she and Doug head to their respective jobs. Doug himself is the one more anxious of himself and Delilah, about the night, vocally questioning why the Humans do it every year. Before he heads to work, Doug gets tearful and calling for a Group Hug from all the Pups. He is later seen, in a Fire Truck, howling in rhythm to the siren, where he almost notices Dolly and Dylan outside.
In "Snow Day", Doug is off work with London being closed due to a snow emergency-level winter snowfall. As such, he decides to prep his kids for a family outing in the park when they ask to go. He at first tries to get the pups into warm winter wear by being "The Hat Reindeer", placing wool hats on the heads of his children one at a time. He and Delilah agree to a contest against Dylan and Dolly to see who gets the pups prepared the fastest.
In "A Summer to Remember" Doug and Delilah start the family vacation off dealing with thier children constantly asking if they are at Cornwall yet until they arrive. Upon getting to the beach, he and Delilah try to have some romantic alone time, only for the pups to interrupt them.
- While all the other puppies refer to him as "Dad" or "Father", Dawkins still refers to Doug by name, suggesting that Dawkins is one of his stepsons.