"The numerous examples provide interesting food for thought, particularly for readers who are new to research on this topic." S.C. Baker, Choice magazine
Introduction; 1. Male and female pals – not just for sex!; 2. In sisterhood; 3. In brotherhood; 4. Mothers and daughters; 5. Mothers and sons, and providing free food; 6. Fathers and sons: social grooming and preening; 7. Family and group tight bonds; 8. Old buddies; 9. Social but seldom sociable animals; 10. Cross species pals; 11. Animal and human 'friendships'; Index.