Two men try to sell the Sharks on their stuffed animals for the bathtub, a dog lover from Los Angeles shows off a wearable pet carrier, and ninja entrepreneurs demonstrate a darts-like card game. Also: a follow-up on a custom bike company based in Dallas, which was invested in by Mark and Barbara during Season 3.

Entrepreneurs include the owner of an all-female golf caddy company, a couple who believe they have come up with a better, safer way for kids to bounce, and a trio who pitch to the Sharks their fun spin on a classic faceware accessory. Also: an update on Mark Cuban's $2 million investment in the Los Angeles Haunted Hayride during Season 4.