|Fifth||Debut: Blythe's Pet Project|
|Sixth||Voiced by: Brian Drummond|
Blythe met Shivers while looking for Mrs. Twombly's glasses. Noticing that he shivering from cold, she named him "Shivers". Shiver later entered the shop's daycare, claiming to be Blythe's pet, and generally annoying the pets by hogging all the food, water, and pillows. He suffers from compulsive hoarding.
Soon after Blythe debunked his claims of being her pet, the others discovered that their possessions were missing. They accused Shivers, and were proven right, finding their possessions in the antic. At first, he tried to pass off his stealing as "gathering", but the other refused to accept that. Breaking down, he tearfully admitted he had a problem. Blythe attempted to leave Shivers at the local park, but he kept coming back. When questioned, he admitted he had a home at the park, but it was too cluttered to live in. Blythe and Pepper helped to clear out the tree, and Shivers happily returned home.
- Before Blythe named him, Shivers didn't seem to have a name, calling himself by what other people yelled at him, like "Scat" and "Get outta here".