Police need the public's help identifying the man who allegedly tossed a 10-week-old dog from a car window in Lowell.

The four-pound puppy, a teacup Yorkshire Terrier named Austin, was in recovery at the Animal Rescue League Boston Thursday, according to a release from the organization.

Witnesses saw an unidentified male suspect throw Austin out the driver-side window of a moving car near the Tsongas Arena Monday, the release said. One of the bystanders brought the pup to the Wignall Animal Hospital in Dracut, where he was treated for serious injuries – reportedly racking up $400 in hospital bills.

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“When he arrived at the animal hospital, sweet little Austin was clearly shaken up from the incident,” said Darleen Wood, Lowell Police Animal Control Compliance Officer, in the release. “He had bleeding on the left side of his jaw and neck, and could not stop drooling and crying. He was clearly in a lot of pain.”

The dog was expected to recover and would be sent to live with a foster family soon, the ARL said. He is not currently available for adoption.

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Police were gathering footage from nearby cameras, the release said.

You can donate to the ARL on their website, and can use one of these numbers to provide information about the incident: 

*Animal Rescue League of Boston’s law enforcement department  – (617) 226-5610

*Lowell Police Department Crime Stoppers Tip Line – (978) 459-TIPS (8477)