whats a cow thats a chicken?!

cow is an animal chicken is an animal
what would a cow that is a chicken be?
first off, there are many logical arguments for this topic.
it cant be a chicken, because its a cow, but it cant be a cow, cause its a chicken
therefore, that would only be logical to say it is nothing

but we no thats obviously not true, cause its a cow that a chicken, and a cow thats a chicken is something. so woukld it make any difference to say its a chicken thats a cow, when it was really a cow thats a chicken?