Natures

Natures can be viewed at the Summary Page of a Pokémon. Natures are important to the game because they determine what berries Pokémon like and don't like. Natures are randomly generated when Eggs are hatched, with 1/21 chance of each nature. Since five natures are under the any category while there are only four in the others, you are most likely to get a Pokémon that likes any berry.

	-Sour	-Spicy	-Dry	-Sweet	-Bitter
+Sour	-	Bold	Impish	Relaxed	Lax
+Spicy	Lonely	-	Adamant	Brave	Naughty
+Dry	Mild	Modest	-	Quiet	Rash
+Sweet	Hasty	Timid	Jolly	-	Näive
+Bitter	Gentle	Calm	Careful	Sassy	-

Pokémon with the natures Hardy, Docile, Serious, Bashful, or Quirky can be fed any berry. However, these Pokémon receive less EXP than those with a favourite flavour.