Least Concern Reptile
Saltwater Crocodile
The largest living reptile and most powerful bite on Earth
Read the guideAnimals that start with S
There are 17 animals that start with the letter S, including the Saltwater Crocodile, Scarlet Macaw, Sea Otter, and more. See photos, facts, and full guides for each.
Least Concern 
Least Concern Bird
Scarlet Macaw
The brilliant red parrot of the rainforest
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Endangered Mammal
Sea Otter
The tool-using keystone of the kelp forest
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Least Concern Invertebrate
Sea Urchin
The spiny ball that grazes the seabed
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Vulnerable Fish
Seahorse
The tiny fish where fathers give birth
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Endangered Fish
Shortfin Mako Shark
The fastest shark in the ocean
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Least Concern Mammal
Sloth
The slowest mammal on Earth
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Least Concern Reptile
Snapping Turtle
The powerful-jawed freshwater turtle of North America
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Vulnerable Mammal
Snow Leopard
The elusive ghost of the mountains
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Vulnerable Bird
Snowy Owl
The white owl of the Arctic tundra
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Least Concern Mammal
Spotted Hyena
The social, powerful hunter of the African savanna
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Least Concern Amphibian
Spotted Salamander
The yellow-spotted salamander of eastern forests
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Least Concern Mammal
Squirrel
The agile, tree-climbing rodent of parks and woods
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Near Threatened Insect
Stag Beetle
The large beetle with antler-like jaws
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Least Concern Invertebrate
Starfish
The five-armed drifter that regrows its limbs
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Least Concern Fish
Stingray
The flat-bodied ray with a venomous tail
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Least Concern Fish
Swordfish
The ocean hunter armed with a sword
Read the guideAnimals that start with S: FAQs
What animals start with the letter S?
Animals beginning with S include Saltwater Crocodile, Scarlet Macaw, Sea Otter, Sea Urchin, Seahorse, and 12 more.
How many animals begin with S?
Our guide currently covers 17 animals whose names start with S.