But what is the animals name in its singlar tense? Not in Latin but in English. If the word Cow refers to the female then that cannot be it, there must be another word surely!?

Tense is a grammatical category of verbs.Cow is mostly used as a noun. What is the singular, generic form for cattle. Others have answered a, and it's cow. Not all words for animals in English are orthogonal with respect to sex, age, and fertility. There is a term epicene which in English is sort of a synonym for effete or hermaphroditic, but in Latin was a grammatical term for animal words which were the same form for both male and females of the species (and it still has this meaning in linguistics and lexicography).

Ceci n'est pas un seing.