Whilst away in Serbia at Exit Festival, on the walk home to the apartment on the Saturday night, I heard a very loud squeaking noise. I followed my ears and found two cats looking sheepish behind a bush. Were they watching over their kittens? No. They were playing with a frog, and every time they poked the (small) frog with a paw, it made a squeak, not dissimilar to the squeak a chew toy makes.Obviously, this was hysterical. Since arriving home I have found two brilliant youtube videos, one of a squeaky frog and one of a screaming frog. Incredible. My research tells me that most frogs can squeak, and it's a defense mechanism, to get predators to get off 'em.Squeaking frog:http://youtu.be/hWTrQkzhXKgScreaming frog:http://youtu.be/948rhsRvIkw