Their unique odour and bold coloring
I think that the liquid is called musk. The skunks spray it to enemies, it comes out from it's butt.
Skunks produce a toxin called a thiol compound as a defense mechanism against predators. The scent of this toxin is strong and unpleasant, causing temporary discomfort to potential threats, allowing the skunk to escape.
A group of skunks is called a surfeit or a stench.
Great white shark
Some other wild animals that spray like skunks include hooded skunks, spotted skunks, and stink badgers. They use this defense mechanism to ward off predators and threats.
Skunks use their strong-smelling spray as a defense mechanism against predators. When threatened, skunks can release a noxious spray from their anal glands that can deter potential attackers with its foul odor.
Horned lizards spray blood from the corners of their eyes in self defense. Camels sometimes spit, not always in self defense, but sometimes it is in self defense. Chinchillas spray in self defense. Some snakes spit in self defense, and so do cats. Skunks spray a liquid from their anal sacs in self defense.
For self defense its mostly ammonia that stinks. Animals hate it.
Kingdom Animalia Phylum Cordata Class Mammalia Order Carnivora Family Mephitidae
Skunks use their spray as a defense mechanism when trapped or pursued
Skunk spray is made of chemicals called thiols, which are sulfur-containing compounds. When a skunk feels threatened, it can release this spray from glands near its anus. The strong odor of the spray is very unpleasant to predators and can cause irritation to their eyes and nose, deterring them from attacking the skunk. This defense mechanism helps skunks protect themselves from potential threats.
The musky smell is a defense mechanism, which is an effective repellent against many predators.