Here's a list I've been keeping over the past several years in an attempt to chronicle every type of animal I eat. Yes, I realize a couple sections are disappointingly short, but I am not a hunter and it's hard to find much besides chicken and beef in American restaurants. Most entries in the seafood section were discovered at various sushi restaurants, though a family trip to Hawaii three years ago helped round it out.
Important disclaimer: I am not a bloodthirsty carnivore, nor am I trolling for vegetarians. I had simply noticed that even though we are surrounded by a practically endless assortment of creatures, we seem to rely on chicken, beef, pork, and a small selection of fish for our meat supply. I decided to keep a running list to see how many types of animals a person actually does eat. The experiment may not be valid anymore since I intentionally try new things when I can, but it's interesting nonetheless. These are my results after 3.5 years.
Mammals
Antelope
Buffalo
Caribou
Cow (adult and veal)
Elk
Goat
Kangaroo
Lamb
Pig
Whitetail Deer
Fowl
Chicken
Cornish Game Hen
Duck
Ostrich
Turkey
Reptiles and Amphibians
Alligator
Frog
Fish, Crustaceans, and Mollusks
Alaskan King Crab
Anchovies
Blue Crab
Catfish
Clams
Cod
Conch (cooked and raw)
Crawfish
Crappie
Eel
Flounder
Flying Fish Roe
Grouper
Haddock
Herring
Jellyfish
Lobster
Mackerel
Mah Chong
Mahi-Mahi
Mussels
Octopus (cooked and raw)
Oysters (cooked and raw)
Pollock
Rainbow Trout
Red Clam
Red Snapper
Salmon Roe
Salmon (cooked and raw)
Sardines
Scallops (cooked and raw)
Sea Urchin (only raw)
Shrimp
Snail
Softshell Crab
Sole (only raw)
Squid
Stone Crab
Sturgeon
Swordfish
Tilapia
Tuna (cooked and raw)
Whitefish
Yellowtail (only raw)
Edit: I would not recommend raw octopus to anyone under any circumstances. That is all. Thank you.