Texas javelinas are territorial, cud-chewing mammals that run in herds of up to 40 animals.
The javelina, or collared peccary, is often called a pig, but it is not a pig.
In less developed areas near Tucson, deer, coyotes, mountain lions, javelina and bobcat persist.
As a wildlife manager in Arizona, O'Brien occasionally had to trap and relocate animals such as skunks, javelinas, bears and mountain lions.
