Greetings!
In Gen 3.1, the serpent is described as a "beast of the field." In Gen 3.14, it says that he was cursed above all cattle and above every beast of the field. So, to my way of thinking, the serpent was like a cow, donkey, horse, water buffalo, etc. I was raised in OK. However, i have also noticed during this part of the scripture, the word cattle is distinguished from beast - Gen 1.24, 25; 2.20.
I searched on Blue Letter Bible for "beast of the field.