Lizard Doggo

The Lizard Doggo is a short reptilian dog, orange in color and about the height of an engineer's knees. It has 4 eyes, long ears, and short legs, with a shrimp-like tail and scales on the back resembling a carapace. It occasionally makes a bird-like sound. It wanders around at random and will run away from sprinting engineers, but it can be baited with a Paleberry. It is widely viewed as the game's mascot after its initial appearance in the teaser trailer, and was the first and only thing revealed about the game until the E3 Reveal Trailer.

Behavior
The lizard doggo is cautious and normally runs away from players. However, if a player drops a Paleberry nearby, the lizard doggo will eat it and become passive to the player (sprinting will still scare the lizard doggo away while in this state). The player can then tame the lizard doggo by petting it (default ). Once tamed, the lizard doggo follows the player, and will occasionally "pick up" random items (see below) and store them in its inventory (accessed by petting the lizard doggo again). They can be kept in a makeshift farm in order to gather items frequently.

At random intervals, one of the following items is generated at random in varying quantities in a tamed lizard doggo's inventory (this is not a complete list): When carrying Uranium or Nuclear Waste, players receive radiation damage but the lizard doggo does not. In addition, Nuclear Waste cannot be trashed, which makes it hard to dispose of.

The lizard doggo can also be used as a mule of sorts, as the single inventory slot can be used to store an item. However, given the ease with which the lizard doggo is scared away, it is easy to lose items this way.

Lizard doggos can forget that they have been tamed, but it won't lose the items in its inventory and can be re-tamed.

Lizard doggos will try their best to follow their owner, but if the player moves too far away or jumps more than 2 meters in the air (e.g. with the Blade Runners), the lizard doggo will run away.

Lizard doggos can be killed by the player, hostile creatures, and from falling too far. Avoid combat and great heights with lizard doggo around. It does not drop any items on death.

Multiplayer

 * A lizard doggo can only have 1 owner. Only the owner can view the lizard doggo's inventory.
 * Ownership can be transferred by having a player other than the owner feed the lizard doggo another paleberry. The previous owner no longer has access to its inventory.

Current Issue

 * The lizard doggo's UI does not properly close when clicking the 'X' button. To properly close it, press.
 * Lizard doggos can easily fall off high ledges, including elevated foundations, and die from fall damage. Avoid keeping them in high places.

Media appearances

 * It occupies the entirety of the teaser trailer and can be seen attempting to eat a paleberry, while construction work can be heard and shadows and lights can be seen coming from behind the camera.
 * In the E3 Reveal Trailer it can briefly be seen riding a conveyor belt at 1:48.

Trivia

 * Lizard Doggo's name comes from the combination of its scaly appearance which suggests that it is some sort of reptile, but its behavior that is comparable to that of a domestic dog.
 * "Doggo" is an informal affectionate term for a dog. It was initially used jokingly but made its way into the game itself.
 * The name "Lizard Doggo" was originally coined by YouTube commenter Chad Mojito.
 * The "Lizard Doggo" may even get its own plush in real life as said in Q&A #2.
 * Internally, it is referred to as "Space Rabbit".
 * Lizard Doggos are supposed to be a cross of a rabbit and a shrimp that acts like a dog.