DAVIS (CBS13) – Two dog separate dog bite incidents has authorities scrambling to prevent two young children from getting post-exposure rabies treatments.

The attacks happened on May 28 and June 2, according to the Yolo County Sheriff’s Office. In the first, a 7-year-old boy was out with his grandmother near the North Davis Greenbelt along Catalina and Corona Drives. A black Labrador retriever running loose bit the boy.

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No owner was seen with the dog. While the dog looked to have a rabies tag and two other tags on its collar, the grandmother couldn’t read the tags.

The most-recent incident happened at Sandy Motley Park. A 7-year-old girl and her mom were at the park when the girl was bitten by a pit bull or box-type dog. The dog looked to be young and out of control, the victims report.

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Before the victim’s mother could exchange information, the dog and his handler took off from the area. She describes the handler as a sun-tanned man in his 20s with short, dark brown hair. He was reportedly wearing glasses, shorts and a red t-shirt with some sort of design on the front.

The dog and handler were last seen walking towards Pole Line Road.

Animal Services officers haven’t been able to find the dogs or their owners and are now asking anyone with more information to come forward. Authorities would like to verify that the dogs have a current rabies vaccination in order to prevent the children from getting rabies treatment.

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Anyone with information is asked to call the Yolo County Sheriff’s Office Animal Services division at (530) 668-5287.