Yes , some creatures are bio-luminescent such as fireflies and deep sea animals .
Some animals that make and give off their own light are glow worms, fireflies, scorpions, krills, jenger jellyfish and luminous fish.
fireflies
Bioluminologist .
Animals such as fireflies contain two chemicals, luciferin and luficerase. When combined with oxygen, they give off light.
yes it does give off light
The phrase 'give off light' means to have a lot of light.
all plant eating animals do give off methane.
They all need light. Those who are too far away from the light rely on heat from towers that give off smoke from the earth's core. (can't remember what the towers are called)
Planets and Moons only reflect light, they do not 'give off light'.
A rose does not give off light
The stars give off light
Plants take in carbon dioxide and give off oxygen Animals take in oxygen and give off carbon dioxide