Height at shoulder2 tenths m
87 billionthsGreat Barrier Reefs
51.1 millionthsAkashi Kaikyo spans
1.11Carrot lengths
Breed standard 15-23 cm
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The world's smallest recognized dog breed/Small Animals
The Chihuahua packs an outsized personality into a body that barely tips the scales. Originating in the Mexican state of the same name, these tiny dogs have the largest brain-to-body ratio of any breed and a resting heart rate that would alarm a cardiologist. They shiver not just from cold but from sheer excitement at existing.
Breed standard 15-23 cm
Breed standard 1.5-3 kg
About 140 bpm
About 38.3 C
About 24 km/h
About 15 years