Changes

[[National Geographic]] asserts however that homosexual behavior occurs in animals.<ref>http://news.nationalgeographic.com/news/2004/07/0722_040722_gayanimal.html</ref> For example, every cattle farmer is familiar with the phenomenon of "bulling," cows mounting other cows; in fact, this is one of the standard signs farmers look for when determining that a cow is coming into estrus. However, it does not follow that the cows involved are showing anything analogous to human lesbian orientation.

[[National Geographic]] asserts however that homosexual behavior occurs in animals.<ref>http://news.nationalgeographic.com/news/2004/07/0722_040722_gayanimal.html</ref> For example, every cattle farmer is familiar with the phenomenon of "bulling," cows mounting other cows; in fact, this is one of the standard signs farmers look for when determining that a cow is coming into estrus. However, it does not follow that the cows involved are showing anything analogous to human lesbian orientation.

Others asserts also that sexual behavior between animals of the same sex is common:

Others assert also that sexual behavior between animals of the same sex is common:

* [[Bonobos]],<ref>Parker, Sue Taylor,Robert W. Mitchell, H. Lyn Miles (1999), ''The Mentalities of Gorillas and Orangutans: comparative perspectives.'' Cambridge University Press. [http://books.google.com/books?vid=ISBN0521580277&id=h4_VnW-HGAcC&pg=RA1-PA54&lpg=RA1-PA54&dq=bonobo+homosexual&sig=rdHH7YmjFiR7x5ONwt2e1EdfrBk p. 54]

* [[Bonobos]],<ref>Parker, Sue Taylor,Robert W. Mitchell, H. Lyn Miles (1999), ''The Mentalities of Gorillas and Orangutans: comparative perspectives.'' Cambridge University Press. [http://books.google.com/books?vid=ISBN0521580277&id=h4_VnW-HGAcC&pg=RA1-PA54&lpg=RA1-PA54&dq=bonobo+homosexual&sig=rdHH7YmjFiR7x5ONwt2e1EdfrBk p. 54]