A teacher told police about the suspected abuse and a report was filed with Child Protective Services, KXAN-TV, Austin, Texas said.
The arrest warrant says that a 4-year-old sibling of the teen told a teacher that his mother had "tased" the 14-year-old four times, including once in the head.
During the incident, the father held the 14-year-old down, KXAN-TV said.
Police said the teen has bruising and burning consistent with stun gun injuries.
The mother told police she used the stun gun because "he is a handful."
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