Jellyfish stings are painful and can cause a lot of damage to the skin. However, some dogs have been stung by jellyfish and survived. It is important to remember that not all jellyfish are harmful to humans or animals. If you see a jellyfish in the water, it is best to avoid contact with it. and use caution when swimming in the ocean. Jellyfish are not a major threat to humans or animals due to their diet. They primarily eat plankton and use their stings as a defense mechanism. In general, jellyfish stings can be treated with a topical antibiotic cream.