Squishy Paws Tiberius Harper is the only pet of the Harper's and is a big part of their family.
Squishy Paws is either a mix of Cairn Terrier and Shi-Tzu or a West Scottish Highland Terrier.
In the Pilot episode, the quads find the dog in their dad's store, Get Sporty. The want to adopt him to prove to their parents that they are responsible and they can work together. They convince their mom and dad to let them adopt him, but there's one problem: They can't agree on a name. Nicky wants the name Gary, Ricky wants the name Chip, Dicky wants the name Tiny Elvis, and Dawn wants the name to be Squishy Paws. In the end of the episode The Sad Tail of Gary Chip Tiny Elvis Squishy Paws, they reveal that the dog will decide the name. They placed five bowls down on the ground in front of him, with each name on it. The fifth name is Lord Timothy, which is what his previous owner had named him. He wandered for awhile, but then choose the name Squishy Paws. In another episode, it was mentioned by Tom Harper (the quads' father) that his middle name was Tiberius.