Full Idea
A good social animal is well fitted for 1) individual survival, 2) continuance of its species, 3) characteristic freedom from pain and enjoyment, and 4) good characteristic functioning of its social group.
Gist of Idea
Good animals can survive, breed, feel characteristic pleasure and pain, and contribute to the group
Source
Rosalind Hursthouse (On Virtue Ethics [1999], Ch.9)
Book Reference
Hursthouse,Rosalind: 'On Virtue Ethics' [OUP 2001], p.202
A Reaction
This feels right, but brings out the characteristic conservativism of virtue theory. A squirrel which can recite Shakespeare turns out to be immoral.