Predators are other creatures who can appear on the Tamagotchi Ocean and Mori de Hakken! Tamagotch. They appear when the Tamagotchi is vulnerable, and the user must act immediately to drive them away. To do this, the appropriate icon must be selected ("Call" on the Ocean, "? Box" on the Morino), and the user must tap the side or screen of the toy (shaking the toy vigorously will also work). In most cases, this will drive the predator away. Failure to drive away the predator adequately will either result in the character becoming injured or killed.

The predator system is based on the bats from the Tamagotchi Angel and the rockfall mechanic from Game de Hakken!! Tamagotchi 2, being external sources of danger for the Tamagotchi that requires the user's physical intervention and detrimental effects to the Tamagotchi if they fail to aid them. While bats stealing chocolate just cause the loss of Angel Points and Deeds, getting hit by a rock will injure or kill a Tamagotchi.

On the Morino

On the Mori de Hakken! Tamagotch, the predator may be either Keropyontchi (ケロぴょんっち) threatening to eat the Tamagotchi, or a large human foot accidentally stepping on it. Both predators in this release share the same functionality.

On the Ocean

The Tamagotchi Ocean features two predators. The primary one is a Polar Bear (白クマ white bear) who may show up every fifty minutes, when the Tamagotchi is taking a nap during the day. The other is an Octopus (タコ) which may appear during the treasure game and will squirt ink, filling all four pollution skulls and emptying all four happiness hearts. The Octopus' attacks will not injure a Tamagotchi, but ones from the polar bear will.