allows for the adhesion of the prey to the tongue. The catch is then taken into the mouth and swallowed right away, as frogs do not chew their food and many do not even have teeth. Members of Crinia do have vomerine teeth, which are pairs of teeth-like plates on the roof of the mouth that slant inward, but they appear to be rather unimportant. Once the food is in the stomach, the stomach compresses and abdominal muscles aid in digestion and expulsion of waste. Call The call of the quacking frog, just as its name suggests, is described as closely resembling the quack of a duck. There are usually 1–4 quacks in a sequence, but there can be up to 12 and males will respond to the calls of other males with the same amount of notes. The calls are used to attract females who are ready to mate. The call is distinct and loud, and these frogs will respond to imitations of their call. Male Crinia georgiana emit calls that consist of 1-11 notes. However, there is variation in the number of notes that are produced, and this is dependent on stimuli. Using synthetic calls of 2 notes and 4 notes in experiments, it was shown that males match the number of notes. However, in experiments with a 1 note synthetic stimuli, more than 1 note was produced by the male quacking frog. In an experiment where 8 notes of synthetic stimuli were exposed to the male, the male produced less than 8 notes in response. When males of this species are exposed to artificial note stimuli, males alternate the notes that they produce. Additionally, the frogs adjusted the number of notes they produced based on the increase or reduction of the artificial stimuli that was presented. This may be an indication that quacking frogs have a behavior that is meant to minimize the occurrence of call overlap. Even though they have an array of calls, the calls are categorized as high or low pulse rates. In the C. georgiana, the first note is longer than the other notes that come in succession. However, not all males are able to match the number of notes that they are exposed to precisely, which indicates that there is a form of latency regarding call matching. The number of notes presented in a stimulus was correlated to the latency of the