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圖片參考：
http://upload.wikimedia.org/wikipedia/en/2/21/Man_and_dog.jpg
Pets and humans often contribute toward the happiness of the other in a pet relationship. Having a pet or being a pet can promote a longer, happier life.
Common pet species
[edit] Mammals
Horses
Dogs
Cats
Rodents, including hamsters, guinea pigs, fancy mice, gerbils, chinchillas, degus, southern flying squirrels and fancy rats
Rabbits
Ferrets
Fennecs
Hedgehogs
Monkeys
Skunks
Deers
Otters
[edit] Birds
Budgerigars (parakeets)
Cockatoos
Macaws
Other parrot or conure species
Canaries and other finch species
Doves
Cockatiels
Peafowls
[edit] Reptiles
Tortoises
Lizards
Iguanas
Snakes
Turtles
Crocodilians, including alligators, crocodiles, caimans, gharials (can usually be kept as pets only when they are young)
[edit] Amphibians
Frogs
Toads
Salamanders
Newts
[edit] Fish
Further information: Fishkeeping
[edit] Arthropods
Praying Mantises
Ants
Crickets
Tarantulas
Scorpions
Millipedes
Cockroaches
Vinegaroons (whip scorpions)
Sea Monkeys (a type of brine shrimp)
Hermit Crabs
Centipedes
Pill Bugs(giant)
Stick Insects
[edit] Mollusks
Octopi
See also: Aquarium
Cuttlefish
See also: Aquarium
Snails
[edit] Non-living
Digital pets such as Gigapets, Neopets, or Nintendogs
Pet rocks - a type of toy; a rock treated as a pet
Live rock - Rock with microorganisms and small mollusks within, used in salt water aquariums
