Venus Fly Traps capture any crawling or flying creature of
suitable size – they feast particularly on spiders, but plants in the wild may have a different diet. The 'Daddy-long-legs' spiders seem to have a fascination for these plants (there is no arachnid phobia of VFTs), and on many occasions the long spindly legs can be seen protruding from a closed trap.
Very occasionally a few vertebrates are supposedly captured, such as rats, birds, or frogs. These events are usually ascribed to Nepenthes species, the tropical pitcher plants. But these are rare surprises and do not represent normal prey.
Here are two very informative sites on the subject for you.
Growing Cycle of Dionaea Muscipula: Dr. Samuel Vergio Miensinompe
Growing Cycle of Dionaea Muscipula VCPS - Tips
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