A grown-up Sunda pangolin is about the size of a small dog. When it feels scared, it doesn't run away. It curls into a tight, scaly ball - so tight that even a tiger struggles to get into it. The scales on the outside are like a suit of armour.
Pangolins are completely toothless. They have an extra-long sticky tongue - longer than their body - which they roll into ants' nests and termite mounds. A single pangolin can eat 70 million ants and termites in a year. That's a lot of garden pest control.
They are mostly active at night. By day they sleep curled up in burrows or in the hollow of a tree. Babies ride on their mum's tail like a tiny pinecone hitching a lift. The mother carries her baby this way for the first few months until it is big enough to walk on its own.
Sunda pangolins are very rare and need protecting. Singapore is one of the few cities in the world where they still survive in the wild. There is even a Pangolin Conservation Programme that rescues injured ones and releases them back into the nature reserves.