Marley, a rambunctious puppy, makes himself at home while causing lots of trouble but then proves in a very dramatic way that he is a valuable member of the household.

Marley the rambunctious dog sniffs his way to Cassie's school and spreads chaos as he searches for her.

John and Jenny were just beginning their life together. They were young and in love, with a perfect little house and not a care in the world. Then they brought home Marley, a wriggly yellow furball of a puppy. Life would never be the same. Marley quickly grew into a barreling, ninety-seven-pound streamroller of a Labrador retriever. He crashed through screen doors, gouged through drywall, and stole women's undergarments. Obedience school did no good...

When Marley and his family are out for a walk around town, they are pleased to be invited into the fire station for a tour! Unhappily, Marley has to stay behind, or at least, that's what his family says. Before long, Marley has chewed through his leash and is leading his own tour of the firehouse.

When Cassie and her dad take Marley to his first baseball game, Marley brings new meaning to the term, "three strikes and you're out!"

Marley spots two motherless kittens by the side of the road and his family gladly adopts them, but as he tries to copy the cute behavior of the little felines, the large puppy causes more and more trouble.

Marley, who was scolded for barking at everything he saw, didn't understand why he was told not to bark, but he decides when Baby Louie is crawling away that he must bark!

Marley the dog is often in trouble, but during the first snow of the season he amazes his family with his good behavior.

Cassie's class hatches chicks at school and she gets to bring them home for the weekend, but when Cassie goes on a playdate leaving Marley home alone, things don't go quite as planned.

When the irrepressible pup accompanies her family to the annual community Easter Egg Hunt, she mistakenly conducts a very messy search through the stores in the town square.