"Wormest Country" – No Such Metric Exists

There is no scientific or statistical basis for ranking countries by "wormest" (presumably meaning "having the most worms" or "highest earthworm density").

Earthworm distribution depends on:

• Soil type, moisture, pH, organic matter
• Climate (temperate, moist soils favor higher biomass)
• Land use (pasture > arable > forest > urban)
• Invasive species history (e.g., Lumbricus terrestris in North America)

Temperate, humid regions with permanent pasture (parts of Western Europe, New Zealand, eastern North America) tend to have high earthworm biomass, but no global "worm census" exists. The question likely confuses "warmest" (climate) or is a playful neologism.

If you meant warmest country (average annual temperature): Burkina Faso, Mali, Senegal, Mauritania, Djibouti top the list (~28–29 °C / 82–84 °F).