Dogtanian and the Three Muskehounds (1981)

S1E25 Milady's Revenge

Dogtanian and the Three Musketeers have made their way into Spain, eagerly anticipating their time at the Spanish court. As they revel in the journey, they remain oblivious to a mysterious figure trailing them with a carrier pigeon. Upon arriving in the city, they discover it’s the day of a bullfight. Pip imagines himself as a matador, but when he tumbles off Sandy and snaps back to reality, they hear that a bull has broken loose. The bull charges toward them, and they narrowly escape, leaving a baby in danger. Athos bravely leaps off his horse, seizing the bull by the horns and subduing it.