Yes. Frogs (and toads) have mucous glands all over their skin to help keep their skin lubricated. If frogs do not keep their skin moist they will dry out and die. In some species, such as the poison dart frogs, the secretions from these glands are highly toxic. All frogs and toads have a degree of these poisons, even if it is only in retrace amounts, but in some species the concentration of toxins is much greater, providing an effective defence mechanism. The mucous glands in frogs' and toads' skin is different from the parotid glands which some species of toads have just behind their eyes, which contain irritants and other toxins to deter predators.
some frogs breath through skin some don't.
They can always jump to escape and some frogs have poison on their skin
to ward off predators
Yes. Frogs have smooth skin which is slippery and delicate.
No African Dwarf Frogs do not shed there skin.
Frogs have wet, moist skin. Their skin is not scaly, but it is smooth.
Yes poison frogs let out fumes.
Frogs have smoother skin. Frogs have slippery and delicate skin, but toads have drier skin with warts.
Some species of frogs have green skin and they hop.
There are many types of tree frogs. Some do release noxious skin secretions that some preditors find unpalitable.
Correct. Frogs have smooth skin which is slippery and delicate, but toads have drier skin with warts.