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Animal Feat Training (3.5e Feat)
From D&D Wiki
Animal Feat Training [General]
Prerequisite: Handle Animal 4 ranks, target animal is trained for war (Handle Animal tricks attack and down, or any package that contains those abilities).
Benefit: You can train a feat to one of your animals or animal companions. The feat must be a fighter bonus feat or a monstrous feat, and the animal must qualify for this feat. Training a feat takes 1d4 days.
Dying: Should your animal die, you can teach a feat to another animal.Losing or Selling: If you lose or sell your animal, it forgets its training in 1d4 days.
Special: You may choose this feat multiple times. Each time you assign a new feat to one of your animals.