I was reading a TOEFL textbook and came across this sentence:
[I]t is unlikely that Brachiosaurus could have lifted its neck to reach tree leaves.
I know when it comes to referring a kind of animals, we usually use the plural form or "the" before the word in its singular form to refer to the whole kind such as:
"The cat is my favorite animal"
"Cats are my favorite animals".
It would be grammatically wrong to write
"Cat is my favorite animal."
So my question is why the word "brachiosaurus", a countable noun, doesn't have to follow this rule. Shouldn't it be:
"It is unlikely that the brachiosaurus could have..."
"It is unlikely that brachiosauruses could have..."