Yorkie

"Oh. Mr Woolsey, do you have children? Uh, no, but I did have a Yorkie for many years."

- Teyla and Mr. Woolsey

A Yorkie (or Yorkshire Terrier) is a breed of small dog on Earth. Mr. Woolsey told Teyla he used to have one when she asked if he ever had children. However, in the divorce with his wife she got the dog and never had a chance to say goodbye to it.