1. National Geographic Kids

Bright, engaging facts and pictures, written for children.
https://kids.nationalgeographic.com

2. BBC Bitesize

Reliable and age-appropriate information linked to school learning.
https://www.bbc.co.uk/bitesize

3. World Wildlife Fund (WWF) – Species Facts

Clear animal profiles with conservation links.
https://www.worldwildlife.org/species

4. DK Find Out!

Short facts, simple language and excellent diagrams.
https://www.dkfindout.com