Animal Lore
Choose Animal Lore in the Skills window, then click on an animal. If successfully completed, you will see the animals' description.
Training:
Lead the animal into the house, command “all release”, aim the target with a dagger, and hold the button down [Use Skill (AnimalLore), Last Target]. It can be any animal. By 30% percent, this skill influences how long the animal will stay with you.