Jose Tomas received a 17-pint blood transfusion after the half-tonne bull plunged one of its horns 10cm into the fighter's left thigh, puncturing a vein and an artery.
Tomas had bled so profusely that bullring officials even appealed to the crowd to come forward for transfusions if they matched his relatively rare A- blood type.
Doctors later spent three hours trying to repair a femoral artery perforated in the fight in the city of Aguascalientes.
The director of the Miguel Hidalgo hospital, Geronimo Aguayo, said Tomas had shown "slight improvement" but remains in a grave condition.
Mexican television footage showed the acclaimed fighter being caught out by a quick turn from the animal during the bout, which was being held amid celebrations for an important national festival.
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Now, I'm certainly not an animal rights activist, but I never have been able to see the point of bullfighting.
Harsh as it may seem, someone who likes to torture animals doesn't deserve to live in all honesty and I hope one day something like this will bring about a ban on such sports, although I doubt it. Spain should stick to it's football instead, it's not as if they have a poor choice of teams really is it

What are your thoughts on bullfighting?