A golden retriever named Finley Molloy enjoys picking up tennis balls so much, he can stretch his jaws and cheeks to fit six in his mouth at once, according to Guinness World Records. Finley is undoubtedly a good boy, but how does his achievement compare with other stretchy animal mouths?

In other words, which animal has the stretchiest mouth? It turns out there isn’t a scientific consensus on this cheeky characteristic. However, there are certainly a few standout contenders.