Rat

Rats are common rodents, able to survive almost everywhere.

Tactics
Rats, one of the easiest enemies in the games are most commonly found on the ground or swimming in water. Simply shoot them with your Dual Pistols, and jump backwards if you're on solid ground and they get too close. They are capable of biting Lara which causes little damage but can cause her health bar to drop significantly if they continuously bite her.

Tomb Raider

 * Palace Midas
 * The Cistern
 * Tomb of Tihocan

Tomb Raider II

 * Venice
 * Bartoli's Hideout
 * Opera House

Tomb Raider III

 * Thames Wharf
 * Aldwych

Tomb Raider II: The Golden Mask

 * Fool's Gold
 * Furnace of the Gods

Tomb Raider: The Last Revelation

 * City of the Dead (animating object)

Tomb Raider: Level Editor

 * City of the Dead (animating object)

Tomb Raider: Curse of the Sword
Appears in various locations.

Tomb Raider (2013)
They appear as animals that can be hunted throughout various locations on Yamatai like in The Last Revelation they are not enemies.

Rise of the Tomb Raider
They appear as animals that can be hunted throughout various locations, and are neutral. They award small XP when looted after killing.

Shadow of the Tomb Raider
They appear as animals that can be hunted throughout various locations, and are neutral. They award 5 XP upon killing.

Tomb Raider Reloaded

 * City of Vilcabamba
 * St. Francis' Folly

Trivia

 * The giant rats that appear in the original Tomb Raider are divided into two enemy slots in each level WAD they make an appearance in, one slot for rats on land and another for rats in water.
 * The animating rat object that appears in Tomb Raider IV 's City of the Dead was created using textures and meshes from the giant rat model in the original Tomb Raider.

Appearances

 * Tomb Raider: Featuring Lara Croft (First appearance)
 * Tomb Raider II: Starring Lara Croft
 * Tomb Raider III: Adventures of Lara Croft
 * Tomb Raider III: The Lost Artefact
 * Tomb Raider II: Golden Mask
 * Tomb Raider: The Last Revelation
 * Tomb Raider: Level Editor (non-canon appearance)
 * Tomb Raider: Curse of the Sword
 * Tomb Raider
 * Rise of the Tomb Raider
 * Shadow of the Tomb Raider
 * Tomb Raider Reloaded