How to Say "stallion" in Spanish
The Spanish word for “stallion” is “caballo” — A1 level. This is a very common word in everyday Spanish.

Examples
Mi abuelo tiene un caballo blanco en su granja.
My grandfather has a white horse on his farm.
Me encanta montar a caballo por el campo.
I love to ride a horse through the countryside.
Los vaqueros domaron al caballo salvaje.
The cowboys tamed the wild horse.
Always Masculine
'Caballo' is a masculine word, so you always use 'el' or 'un' before it. For example, 'el caballo' (the horse) or 'un caballo' (a horse).
The Word for a Female Horse
Mistake: “Using 'la caballa' for a mare.”
Correction: The correct word for a female horse is 'la yegua'. Be careful, because 'la caballa' is a completely different word that means 'mackerel' (a type of fish)!
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