c) Researchers have found that as many as 8% of rams (male sheep) demonstrate sexual attraction to other rams.
a) A larger percentage demonstrates attraction to both males and females.
b) While researchers continue to examine why these differences in sexual behavior occur, they have made one significant discovery related to animal brains.
d) The difference occurs in a region of the brain called the anterior hypothalamus, where researchers identified the existence of what they called an ‘ovine Sexually Dimorphic Nucleus’.