The following abilities you can choose from the Pet general feat (page 259) are repeated here for convenience.

• Amphibious 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 It gains a burrow Speed of 5 feet, allowing it to dig Tiny holes.
• Climber It gains a climb Speed of 25 feet.
• Darkvision It gains darkvision.
• Echolocation It can use hearing as a precise sense within 20 feet.
• Fast Movement Increase one of the pet's Speeds from 25 feet to 40 feet.
• Flier It gains a fly Speed of 25 feet.
• Manual Dexterity It can use up to two of its limbs as if they were hands to perform manipulate actions.
• Scent It can use scent as an imprecise sense within 30 feet
• Tough Your pet's max HP increase by 2 per level

Some spells and abilities can affect your companion. When “companion” is used in a stat block, it refers to animal companions, familiars, and types of companions appearing in other books—such as elemental companions. Some spells are even more specific. For example, if the spell says, “Targets your familiar,” you could cast it only on a familiar, not other kinds of companions. If you Cast a Spell that can benefit only a type of creature you don't have, such as Casting a Spell that can target only a familiar when you don't have a familiar, the spell does nothing.

If the spell would affect an ability the creature doesn't have, the spell doesn't give the creature that ability unless the spell says it does. For example, a spell that causes your companion to make a Strike wouldn't let a familiar make a Strike but would give it all other benefits of the spell.