Dodge: You gain a +1 dodge bonus to your AC. A condition that makes you lose your Dex bonus to AC also makes you lose the benefits of this feat.
Light Armor Proficiency: When you wear a type of armor with which you are proficient, the armor check penalty for that armor applies only to Dexterity- and Strength-based skill checks.
Hold-Breath:
The creature can hold its breath for a number of rounds equal to 4 times its Constitution score before it risks drowning.
Link:
A druid can handle her animal companion as a free action, or push it as a move action, even if she doesn't have any ranks in the Handle Animal skill. The druid gains a +4 circumstance bonus on all wild empathy checks and Handle Animal checks made regarding an animal companion.
Low-Light Vision:
Characters with low-light vision have eyes that are so sensitive to light that they can see twice as far as normal in dim light. Low-light vision is color vision. A spellcaster with low-light vision can read a scroll as long as even the tiniest candle flame is next to him as a source of light.
Characters with low-light vision can see outdoors on a moonlit night as well as they can during the day.
Share Spells:
The druid may cast a spell with a target of “You” on her animal companion (as a spell with a range of touch) instead of on herself. A druid may cast spells on her animal companion even if the spells normally do not affect creatures of the companion's type (animal). Spells cast in this way must come from a class that grants an animal companion. This ability does not allow the animal to share abilities that are not spells, even if they function like spells.
Tricks:
Attack: The animal attacks apparent enemies. You may point to a particular creature that you wish the animal to attack, and it will comply if able. Normally, an animal will attack only humanoids, monstrous humanoids, giants, or other animals. Teaching an animal to attack all creatures (including such unnatural creatures as undead and aberrations) counts as two tricks.
Defend: The animal defends you (or is ready to defend you if no threat is present), even without any command being given. Alternatively, you can command the animal to defend another specific character.
Heel: The animal follows you closely, even to places where it normally wouldn't go.