In Chiapas a few years back, orchid hunting, we boarded a plane in Tapachula. The flight was held up for a few minutes while the owner of several fighting cocks, wearing a fine western outfit with top quality Stetson and a silver-plated revolver on each hip, saw that the cages of his birds were properly stowed for the flight. We also watched, to make sure that our two coffee-picking bags of orchids were not squeezed.
Cock fighting and, as far as I know, dog fighting are legal except in the D. F.

Dog fights were held regularly outside of Juarez, attracting people from El Paso and southern New Mexico; I presume that these fights continue.