First described as a species (discovered by science) in 2021, a male Brookesia nana is just 20mm (0.8in) long and is found in the rainforests of northern Madagascar.
1. Smallest Reptile: Brookesia Nana
The bee hummingbird (Mellisuga helenae) weighs as much as a paperclip, and measures just 5- 6cm (1.9-2.3in) in length.
2. Smallest Bird: The Bee Hummingbird
The world's smallest insect, the US parasitic wasp, measures just 0.139mm long and spends most of its life inside its host, the bark louse.
3. Smallest insect:Dicopomorpha Echmepterygis
Described in 2012, this tiny frog is so small that it skips the tadpole stage. It lives in rainforest leaf litter, feeding on ticks and mites.
4. Smallest amphibian: Paedophryne Amauensis Frog
Weighing about 2g and measuring 29-33mm in body length with a wingspan up to 145mm. Found in Thailand and Myanmar.