How many pounds does a male adult panther weigh?

The premise of your question contains an error. Contrary to popular belief, panthers are not a distinct species of big cat. The term "panther" is usually used informally to refer to certain large felids, such as leopards, jaguars, or black panthers (melanistic variants of leopards or jaguars). Male adult leopards typically weigh between 132-176 lbs (60-80 kg), while male jaguars can reach weights of up to 250 lbs (113 kg).