The young are precocial, following their mothers shortly after birth and are usually weaned at six weeks. While javelina have lived to 24 years in captivity, the average life span is closer to seven or eight. Predation on javelina is common from mountain lions and bobcats. Coyotes and golden eagles are effective predators of juvenile javelina. Since javelina are found in so many habitats, its natural that their foods should vary.
Javelina are opportunistic feeders.
Eating flowers, fruits, nuts, berries, bulbs, and most succulent plants. Prickly pear cactus makes up the major portion of the diet. Javelina are herd animals with herd sizes averaging 8 to 9 animals. Territories are set up using droppings and the dorsal scent gland to mark these areas. Aggressive displays will be made to intruding javelina.