The definition of virtuous behavior is to behave in accordance with moral principles. Some examples of virtuous behavior are to be kind, generous, grateful, and benevolent.
All animals exhibit some form of behavior. You haven't said which kind is the behavior.
Altruism, kin selection, coorporation, mutualism, social contracts (some social species have this sort of thing). All are examples.
some animals have shells?
There are a ton of examples of lower animals. Some of these lower animals include field mice and sewer rats.
Some examples of social media are Facebook, Twitter, Foursquare, Tumblr, Frequency, YouTube, etc.
They live together in an invironment, they can live together and teach eachother every they know. They can keep food storage higher with more of them in a group.
The study of group behavior
there are many examples of social networks heres some to google search: facebook, twitter and my space hope this helps
There are an unlimited number of examples of sedentary animals. These animals are the ones who sit around waiting for their food to come by.
Sudden inactiveness, showing no interest in food, and acting as though they are in pain are some examples of strange behavior.
Social drugs are drugs available in social situations. Some are legal and widely used. Some are banned in many sports and are also illegal. Examples of social drugs are:Nicotine, Alcohol, Cannabis, Caffeine, Stimulants
going to the bathroom in public
you enroll in a course you like that is voluntary
All of them. Even animals without neural tissue have ingrained patterns of behavior and even the most intelligent animals (read humans) have some behaviors that are instinctual.