Megazostrodon
Megazostrodon is a small, furry mammal with a pointy muzzle and a long tail, very similar to a shrew. This species lived about 225 million years ago, from the Late Triassic to the Early Jurassic. Modern-day mammals probably descended from the Megazostrodon. Megazostrodon inhabited burrows and was a nocturnally active animal for extra protection from predators. It was only 10 cm in size, possibly becoming a prey to almost anyone. Its food included insects, tiny reptiles, dinosaur eggs and even worms. Megazostrodon was anegg layer, however, it breastfed its cubs instead of abandoning them.