Why does my horse behave differently?
Keep the surrounding conditions
Note confidence, activity, injury status and the visible quirk before comparing sessions. This prevents a change in training context being mistaken for a personality effect.
Confidence still matters
Developer notes describe a warning icon before unprompted gait changes. Respond to the warning rather than assuming full confidence guarantees identical behavior.
What is not established
Exact frequencies and a complete quirk list are UNKNOWN. Your observations remain USER_ENTERED, even when they resemble another player’s report.
Not every useful quirk is inherited
The developer-published Library image distinguishes feed-related inherited traits from non-inheritable confidence quirks. Snacky favors food rewards and Cuddly favors scratching the itchy spot in that pictured build. Treat these as dated descriptions and record a current observation separately.