Will frogs bite you

Some species of frogs secrete toxins from glands in their skin. Only a few species of frogs secrete toxins deadly enough to kill humans, and most of these are the poison dart and mantella frogs.

The majority of toxic frogs would only make a human very sick if they ate it. The popular White's Tree Frog (kept as a pet) secretes a waxy toxin that would make humans ill if ingested, and of course one should avoid getting it into the eyes or other mucous membranes.

Many tree frogs are completely non-toxic, so the short answer to your question is 'no'. It's not impossible that there is a deadly toxic tree frog somewhere in the world, as we have definitely not discovered all species of frogs in the world yet.

Even the most toxic frogs definitely can't kill you if you don't eat them, or rub them on an open wound. ^_^