The dog is thought to be about six weeks old
A lot of different things end up in lost property bins - phones, wallets, sunglasses.
But Dublin Airport has got a new category to add to that - puppies.
The small dog, thought to be about six weeks old, was discovered beside the multi-story car park at Terminal 1.
He was found by a member of the public at around 9.30am Wednesday.
Dublin Airport say the puppy "is playful, content, fit and healthy."
The dog was in a blue plastic box with a blanket. He has since been sent to a local vet for a check-up.
"The person who found him initially thought it was a baby, as there was movement", a daa spokesperson told Newstalk.com.
A veterinary nurse will look after him and he will be re-homed if no owner emerges.