Sheep stood in the foreground of mental images because they had a bigger impact on daily life. From sheep comes wool, milk and meat. They were enviromentally sustainable; meaning you can harvest wool and milk and still keep the animal alive. Goats, though important, need to be killed to harvest their warmth.
I'm sorry but that also does not stand up to reason. Goats too produce milk, cheese, and wool.
So not only is it irrelevant to the topic or thread, it is irrelevant to the supposed prophecy, and totally false to boot.
Aslan is not a
Tame Lion