Nassau County police charged 29-year-old Nicole Ottaiano of Franklin Square with aggravated cruelty to animals.
Police say the dog, an 11-year-old Staffordshire terrier, was found not breathing Monday night.
They say the woman was observed earlier placing hair ties over the snout of one of the owner' other dogs, a Shepherd mix.
Police say the owner told her to remove them and then left the room. When he returned 20 minutes later, police say, he discovered the terrier not breathing under a bed blanket.
Ottaiano is set to be arraigned Tuesday. It's not immediately known if she had a lawyer.
