This is a 3.0 feat, trying to port it over, balanced and tweaked for PF. Critiques and thoughts welcome.
Wild Cohort [General]
You have a special bond with a wild animal, and it is willing to travel and adventure with you.
Prerequisite: 5th Level, Animal Affinity
Benefit: You gain an animal cohort. The animal cohort is generally friendly to you and is willing to follow you and adventure with you. If given proper training, the animal cohort will willingly serve as your mount, guardian, and companion.
You can choose from a badger, bird (eagle, hawk, owl, etc), boar, camel, dog, horse, pony, shark, snake (constrictor or viper), or wolf from the druid’s animal companion list. You may choose another animal you feel is more appropriate to your character, pending your GM’s approval.
Treat your effective druid level as 4 lower than your character level. For example, once you reach 7th level, you would calculate the strength of your animal cohort as a 3rd level druid.
You can use the Handle Animal skill on your animal cohort to ‘handle’ it as a free action rather than as a move action, and you ‘push’ it as a standard action rather than a full-round action. You gain a +2 bonus on all Handle Animal checks made with your animal cohort. Additionally, if the animal cohort is trained in riding or combat training you gain a +2 bonus on Ride checks with your animal cohort.
You can only ever have one wild cohort at any given time.
Special: Druids, rangers or any other class which has selected an animal companion or mount, who take the wild cohort feat gain an animal cohort in addition to their animal companion or mount. Although the two abilities are similar, they follow different sets of rules and must be tracked separately.