Contents
1 Etymology
2 Taxonomy
3 Origin
4 Biology
4.1 Anatomy
4.1.1 Size and weight
4.1.2 Senses
4.1.3 Coat
4.1.4 Tail
4.2 Health
4.2.1 Lifespan
4.3 Reproduction
4.3.1 Neutering
5 Intelligence, behavior and communication
5.1 Intelligence
5.2 Behavior
5.3 Communication
6 Compared to wolves
6.1 Physical characteristics
6.2 Behavioral differences
7 Ecology
7.1 Population and habitat
7.2 Competitors
7.3 Diet
8 Breeds
9 Roles with humans
9.1 Early roles
9.2 As pets
9.3 Work
9.4 Sports and shows
9.5 As food
9.6 Health risks to humans
9.7 Health benefits for humans
9.8 Medical detection dogs
9.9 Shelters
10 Cultural depictions
10.1 Mythology
10.2 Religion and culture
10.3 Dogs in art
11 See also
12 References
13 Bibliography
14 Further reading
15 External links