An illegal migrant maniac allegedly high on a powerful drug chomped on a toddler’s face in Texas last week, two years after the Biden administration failed to kick him out of the country despite his arrest in an earlier violent assault, authorities told The Post.

The horrific April 18 attack in a San Antonio park left 3-year-old Amelia Perez with deep scratches and bite wounds across her face, two teeth knocked out, and life-changing trauma, her family said.

“That brute was ravaging my baby!” mom Gabriella Perez, 27, told The Post. “She’s terrified to sleep. She’s lashing out, angry. She doesn’t understand evil like this f–king man. She’ll never be the same again.”

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That Saturday, the family — Perez, little Amelia, her father Xavier Estrada, 27, and grandfather Richard Ariaza — headed from their home in LaCoste to Espada Park for a quiet afternoon of fishing for the bass, catfish and sunfish.