Familiar Abilities
Source Tech Core pg. 78
Familiars are mystically bonded creatures tied to your magic. Most were originally animals, though becoming a familiar makes them something more. You gain the Pet general feat, except your pet has special abilities. Common choices for familiars include cats, crows, rats, and squoxes. Some familiars are different, usually described in the ability that granted you a familiar.
Amphibious
Source Tech Core pg. 84
Ability Type Pet
It gains the amphibious trait, allowing it to breathe in both air and water, and has both a land Speed and a swim Speed, each equal to its highest land Speed or swim Speed.
Burrower
Source Tech Core pg. 84
Ability Type Pet
It gains a burrow Speed of 5 feet, allowing it to dig Tiny holes.
Echolocation
Source Tech Core pg. 84
Ability Type Pet
It can use hearing as a precise sense within 20 feet.
Fast Movement
Source Tech Core pg. 85
Ability Type Pet
Increase one of the pet's Speeds from 25 feet to 40 feet.
Manual Dexterity
Source Tech Core pg. 85
Ability Type Pet
It can use up to two of its limbs as if they were hands to perform manipulate actions.
Scent
Source Tech Core pg. 85
Ability Type Pet
Your pet gains scent as an imprecise sense within 30 feet.