Critters are non-hostile entities that roam about. This page lists all critters that you can encounter in Attune.
Critter List
Plains Critters
Bird
Grasshopper
Ladybug
Rabbit
Forest Critters
Deer
Grasshopper
Rabbit
Squirrel
Beach Critters
Crab
Sanderling
Seagull
Seaturtle
Lowlands Critters
Crow
Firefly
Frog
Water Strider