Timmikins is Bunty Ferguson's dog.
In Mr. Bentley: Dog Sitter, Bunty Ferguson asks Mr. Bentley to look after her dog. But Timmikins soon runs off, causing Mr. Bentley to go search for him. He goes to Bob's yard and eats Pilchard's breakfast. But Pilchard chases him through town and he soon gets trapped in the converted flats Bob and the machines were building. In the end, they rescued him.