Rankings and statistics
Every ranking below is derived from 2,103,453,662 occurrence records across 3,945 species pages. Counts measure recording effort as much as abundance — a common animal in a well-surveyed country will always out-rank a common animal somewhere nobody surveys.
- 3,945 species
- 2,103,453,662 records
- 36 classes
- 156 orders
- 608 families
- 1,846 genera
Most recorded animals
Species with the most occurrence records worldwide. This measures how often something is r…
Most widespread animals
Species recorded in the greatest number of countries and territories.…
Most localised animals
Well-recorded species found in only one country — the opposite of widespread. Many are isl…
Least recorded animals
Species with very few records here. Low counts usually mean little surveying, NOT that an …
Recently recorded animals
Species with records in the most recent years covered by the data.…
Longest recorded animals
Species whose records span the greatest number of distinct years — the deepest historical …
Oldest records
Species whose earliest surviving record is the oldest. Mostly museum specimens collected b…
Most seasonal animals
Species whose records cluster into the fewest months of the year — migrants, hibernators a…
Index generated 2026-08-18 21:33 UTC.