The cat is a companion for your horses. When they play together, it'll give you all kinds of advantages:
- Dressage bonus: +9
Until 18 months: A gain in Genetic Potential for each hour of play
From 20 months until 25 years old: Earning per hour of play: 0.09 skills (limited to 60 per horse)
Could be bought at the store for 5000 equus.