Lizards in the library (with apologies to Lucy Daniels)

"It's a crocodile! It's a crocodile!" shouted Mr Borrower from the reference department. Ann looked around, and saw that a child had left a toy animal on the floor. It looked like a crocodile, and was lying under the bookshelves.
"No, Mr Borrower, it's just a toy" said Ann kindly. Mr Borrower was always quite excitable. Ann went over and bent down to pick up the toy. And then it blinked.
Ann jumped and gave a little shriek. Mr Borrower said "It's a crocodile! It's a crocodile!"
Ann thought fast, and grabbed an empty box, and put it near the creature, which ran in gratefully.
Luckily for Ann, she knew someone who worked at the vets, so she took the box and showed them.
"That is a bearded dragon" said Mr Harris the vet. "It won't bite you, it's just a baby." It looked like a big baby to Ann, but she thought that maybe someone had it as a pet, and it had got out somehow, and come to the library to keep warm. When she told Dave the caretaker, he thought it was a joke.
Dave came in the following morning, and was putting up some shelves. All of a sudden he saw a movement out of the corner of his eye, and when he looked around, he saw a lizard on the floor. Mr Borrower wasn't there, but if he had been, he would have said "It's a crocodile! It's a crocodile!"
But Dave knew it wasn't a crocodile - he picked it up gently, and took it to the vet, to be reunited with its friend. They will stay with the vet until someone comes to find them, or the vet can find them a new home - a library is no place for a lizard.
But now, when anyone comes into the library, they always look down to see if there are any lizards on the floor.

The first in an occasional series of stories - do you have a library animal story? Squirrels in the Stack? Rabbits in the Reference Library? Lions in lending? Chameleons in the Community Room? Iguanas and Index Cards?
Please let me know.