Bull fighting Lisbon

They do not kill the bulls in Portugal.

Hi

Campo Pequeno is considered to be the premiere bullfighting arena in all of Portugal (it's located in Lisbon).
There isn't any bullfight in August but you can still visit the bullfighting museum located in the building.
https://lisbonlisboaportugal.com/lisbon-sights/Campo-Pequeno-Bullring-Lisbon.html

Bullfighting has been on the decline in Portugal for some time, it's no longer considered a battle of man's bravery between man and bull, rather, more and more people consider it cruel and torture of an animal.

If you still want to see a bullfight look at towns in the area where they raise the bulls and horses for bullfighting-Ribatejo.

If you love animals you'll regret seeing it.
Be prepared for something really gruesome.
Without getting graphic, it's the slow torture and death of an animal.

This may have more to do with Spain than with Portugal; I've never been to a bull-fight; and I don't know what sorts of bullfights they have in Portugal if they have any at all. But while some writers, like E Hemingway and J Michener, seem to have found some vicarious sense of machismo by promoting their fondness for bulls, and bull-fights, one clear-sighted English writer, Henry V Morton, described a bull-fight he had witnessed by filling about four pages of his travel book with every bloody, gruesome detail he saw -- and he saw many. The above comment, by aulopone, conforms squarely with Morton's account. Though it's a bit outdated (1955), I would recommend Morton's book, "A Stranger in Spain," to anyone interested in Spain, and his account of a bull-fight (Chapter 6, section 6) to anyone who plans to attend one.