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The pit bull mix that fatally bit a 3-day-old infant last week was euthanized Wednesday, authorities said.

San Diego County Animal Services put down the dog at the family’s request, Deputy Director Dan DeSousa said.

On April 21, the parents were at home in Mira Mesa and watching TV in bed with their 3-day-old son, Sebastian Caban, and the dog, when the mother coughed and startled the animal. Authorities said the pet reacted by biting the baby’s head.

The parents pulled the dog away and called 911, but each emergency call went unanswered for about 30 seconds, so the family opted to drive the baby to the hospital. The child was later pronounced dead.

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