Chullin 137 - First Fleece - Only Wool of Sheep, not of Goats
The first fleece is given to a kohen only from sheep, because the word "shearing" used by the Torah only applies to sheep, and goat hair is "plucked." This meaning of the word "shearing" becomes clear from the book of Job: "from the fleece of my sheep he warmed himself."
"Any amount" of fleece that the Sages require to be given to a kohen was only said in contrast to Rabbi Yose's eight pounds, but really they mean about five times less than that, and there are four opinions about their opinion.
Art: Paolo Veronese (Caliari) - Portrait of a Man in a Fur Coat
