A study of rats revealed that rats were able to recognize geometric cues, but not changes in color. This goes against the idea that spacial learning based on geometric cues independently of their features.
The tiny organism has an internal clock that triggers it to swim vigorously every 12.4 hours, coinciding with the changing tide — even when it's removed from its habitat.
These complicated and intricate dances show an example of a Fixed Action Pattern, responding to the stimulus of the presence of a female in mating season. The male performs for the female in her presence in a very specific dance and she responds.
Imprinting is a form of learning in which an animal gains its sense of species identification. Birds do not automatically know what they are when they hatch – they visually imprint on their parents during a critical period of development. After imprinting, they will identify with that species for life.