Help me fill out and fix these lists! I was doing so well and then I got stuck on the last set.

Muskrat
Dugong
Sea Lion
Sea Hare
Seadragon
Sea Snake
Hippopotamus
???
Brine Shrimp
Tuna
Mudpuppy
Capybara

Pocket Gopher
Tapir
Sandcat
Hyrax
Earthworm
Rock Python
??
Bighorn
Ardipithecus??
Cock-of-the-rock
Aardwolf
Aardvark

Pigeon
Cowbird
Tiger Beetle??
??
Dragonfly
Flying snake
Horsefly
Nightjar??
Hornbill??
Junglefowl??
Fruitbat
Bumblebee Bat??

??
??
??
??
Salamander
Electric eel??
??
Orangutang??
Sunbird??
Foxfire??