Blink Dog (CR 2)

Medium Magical Beast
Alignment: Always lawful good
Initiative: +3 (Dex); Senses: darkvision 60 ft., low-light vision, scent, Listen +5, and Spot +5


AC: 16 (+3 Dex, +3 natural), touch 13, flat-footed 13
Hit Dice: 4d10 (22 hp)
Fort +4, Ref +7, Will +4
Speed: 40 ft.
Space: 5 ft./5 ft.
Base Attack +4; Grapple +4
Attack: Bite +4 melee
Full Attack: Bite +4 melee
Damage: Bite 1d6
Special Attacks/Actions: -
Abilities: Str 10, Dex 17, Con 10, Int 10, Wis 13, Cha 11
Special Qualities: Blink, dimension door
Feats: Iron Will; Run; Track
Skills: Hide +3, Listen +5, Sense Motive +3, Spot +5, and Survival +4
Advancement: 5-7 HD (Medium-size); 8-12 HD (large)
Climate/Terrain: Temperate plains
Organization: Solitary, pair, or pack (7-16)
Treasure: None

Source: Monster Manual

Combat

Blink dogs hunt in packs, teleporting in a seemingly random fashion until they surround their prey, allowing some of them to make flank attacks.

Blink (Su): A blink dog can blink as the spell cast by an 8th-level sorcerer, and can evoke or end the effect as a free action.

Dimension Door (Su): A blink dog can teleport as dimension door cast by an 8th-level sorcerer, once per round as a free action. The ability affects only the blink dog, which never appears within a solid object and can act immediately after teleporting.