You say Cabra, I say Cobra

Actually, it does make quite a bit of difference - read on.
For instance, last Thursday in my conversation class, we talked about various topics, some serious, like a comparison between the young adults of the 70s and young adults today. I was very pleased with how I managed to make my thoughts understood, and even conjugated verbs correctly! Then we turned to a lighter topic of typical foods and strange foods. We talked about some of the Costa Ricans eating armadillo and iguana on a daily basis, and how in the States we can try frog legs, crocodile, etc. Then we started talking about "cabras" and how there weren't many of them here, but some farmers raised them and used their milk (combined with cow milk) to make milks and cheeses. I asked how on earth cabras were milked and my profesora responded that it was very similar to the way cows are milked. We talked more about this and my amazement grew. Finally I asked, "Isn't it dangerous?" My profesora was confused and then she said, "Dangerous? For who, the cabras?" I said, "No, for the farmers. Aren't cabras venomous?" At this point my classmate looked at me and I said (in english), "Cobras are venomous right?" Kathy burst out laughing and said, "Emily, CABRAS are GOATS!" We then explained my misunderstanding to our profesora and we all laughed hysterically until the end of class. Some of you may be familiar with the term "milking a cobra," which refers to extracting the venom from a cobra. For some reason, that phrase stuck in my mind, but not the explanation. So to me it seemed perfectly logical that somehow, someone had managed to get milk out of a cobra here in Costa Rica!