Far-right millionaire Abelardo de la Espriella won with 49.66% of the people's vote.
Around 80 animals are expected to be euthanised.
Petro opts for subsidies and "smart" measures as trade tensions continue.
The country will begin a new program in the second half of 2026 to control its rapidly growing invasive hippopotamus population.
The decision further intensifies tensions between the two countries.
The government seeks to balance the 2026 budget amid political and fiscal tensions.
The Hercules C-130 transport aircraft crashes during takeoff in the remote Putumayo region.
The twin-engine aircraft goes down on a short domestic flight near the Venezuelan border, with no survivors reported.
The diplomatic thaw comes days after Trump said a operation against Colombia "sounds good".
Petro, a former M-19 guerrilla who later became a constitutional reformer and president.
Bogotá condemns the remarks as the United States president escalates his rhetoric following the capture of Nicolás Maduro.
The first glimpse of the treasure, potentially worth billions of euros.
Families of victims continue to seek truth and accountability four decades later.
"I'm stopping all payments to Colombia," he says.
Two strikes deepen security crisis ahead of key elections.
Colombian authorities detain alleged mastermind of attack.
Laura Sarabia resigns over internal disagreements in Gustavo Petro's administration.
Senator Miguel Uribe remains in intensive care following surgery, as authorities investigate the political attack.
The conservative leader remains hospitalised as authorities investigate the circumstances surrounding the attack.
The two nations advance strategic cooperation as Beijing expands its influence in Latin America.
Seven countries have been designated as safe in a push to streamline returns and curb irregular migration.
Rejects American and French offers.
Benedetti steps into a controversial role despite scandals and opposition within Petro's cabinet.
Gustavo Petro says criminals acquired two missiles and want to shoot down his plane.
After a scathing five-hour televised critique of their performance.
Gustavo Petro proposes worldwide cocaine legalisation as a solution to dismantle the global drug market.
President Gustavo Petro counters U.S. sanctions with equally tough tariffs.