Alice Martin said she picked up her daughter Rose from a day care center in Tucson, only to find her back completely covered with red bite marks.
"I was just in complete shock for about a minute and then I started sobbing and crying and holding her," she told Inside Edition.
Martin said she counted more than 25 bites on the little girl. She immediately filed a police report, but she still has no idea who is responsible for the marks.
"The doctor said it looked for sure like human beings, then they said it was a child based on the measurements," Martin said.
Now she has a warning for other parents searching for day care for their children.
"Don’t compromise," she said. "The day care she is at now I would have never considered because of the price is just about as much as my mortgage, but it is worth it, every penny."