Theory:

Animal biological names in Latin have two distinct parts. For example, Homo sapiens (human beings) or tiger (Panthera tigris). This naming convention is introduced by Carolus Linnaeus called 'binomial nomenclature'.
lossy-page1-1200px-Carl_von_Linné,_1707-1778,_botanist,_professor_(Alexander_Roslin)_-_Nationalmuseum_-_15723.tif.jpg

The first name denotes the genus and the second name denotes the species name of the animal.
  • The genus name should start with a capital letter 
  • The species name should be in small letters
Some common binomial names of some animals are given below:
 
AnimalBiological name
Amoeba Amoeba proteus
Hydra Hydra vulgaris
Tapeworm Taenia solium
Roundworm Ascaris lumbricoides
Earthworm
Lampito mauritii/
Perionyx excavatus
Leech Hirudinaria granulosa
Cockroach Periplaneta americana
Snail Pila globosa
Starfish Asterias rubens
Frog Rana hexadactyla
Wall lizard Podarcis muralis
Crow Corvus splendens
Peacock Pavo cristatus
Dog Canis familiaris
Cat Felis felis
Tiger Panthera tigris
Man Homo sapiens
DoveSpilopelia chinensis
Reference:
Image credit:
Carolus Linnaeus: Free image from Wikipedia; https://upload.wikimedia.org/wikipedia/commons/thumb/4/41/Carl_von_Linn%C3%A9%2C_1707-1778%2C_botanist%2C_professor_%28Alexander_Roslin%29_-_Nationalmuseum_-_15723.tif/lossy-page1-1200px-Carl_von_Linn%C3%A9%2C_1707-1778%2C_botanist%2C_professor_%28Alexander_Roslin%29_-_Nationalmuseum_-_15723.tif.jpg