Drawing Competition: Amazing Animal Builders

You've been designing brilliant new contenders for the Astonishing Amazon Animal Showdown – piranhas with jaws that regrow in whole quarters, a hoatzin that ferments its dinner in a throat pouch, a tailless whip scorpion that senses danger through its legs, and a jaguar with one of the most powerful bites of any mammal. Thank you to every reader who did the research and made the case for their champion.

You've been sending us some extraordinary diary entries – full of ingenuity, wild imagination and genuine nature knowledge. Your islands were home to winged badgers, injured wolves, mysterious felines and ring-tailed lemurs. Meet our four winners!

This competition asked you to design a secret egg hidden somewhere in nature, and your entries went far beyond the obvious nests and burrows. Eggs arrived disguised as pine cones, floating on leaf boats, perched on volcano ledges, tucked into cloud cover and even masquerading as chocolate Easter eggs to fool foxes. Thank you to every reader who took up the challenge and thought like a parent bird, fish, reptile or imaginary creature trying to keep their precious egg safe.