Fact check: There is homosexuality in 99.9% of species in the world. Yet homophobia is in 1%. Which one is weird now?

1. Summary of the results

The original statement's claim about homosexuality in "99.9% of species" is significantly inaccurate. Scientific evidence shows that same-sex sexual behavior has been documented in approximately 1,500 animal species ^{[1] [1]}, which, while significant, is far from 99.9% of all species. The behavior is particularly common among primates and species with complex social structures ^[1].

2. Missing context/alternative viewpoints

Several important contextual points are missing from the original statement:

• Historical Documentation Bias: Until the 1990s, documentation of homosexual behavior in animals was limited due to observer bias and social attitudes. As of 1999, it had been documented in about 500 species ^[2].
• Adaptive Functions: Same-sex behavior serves important social purposes in many species, including:
• Social bonding
• Conflict resolution
• Strengthening group alliances ^{[3] [3]}

Distribution Pattern: The behavior is not randomly distributed across species but tends to be more prevalent in certain groups, particularly among primates ^[1]

Gender Distribution: Same-sex behavior is equally common among both male and female animals ^{[3] [3]}

3. Potential misinformation/bias in the original statement

The statement contains several problematic elements:

• The "99.9%" figure appears to be conflated with human genetic similarity statistics ^[4], which is an entirely different scientific concept.
• The statement about homophobia being in "1%" of species is unsupported by any of the provided sources and appears to be making an inappropriate comparison between human social behavior and animal behavior.
• The statement's rhetorical question ("Which one is weird now?") oversimplifies a complex scientific and social issue by attempting to draw direct comparisons between human social behaviors and animal behavioral patterns.

The statement appears designed to support LGBTQ+ acceptance, which while a worthy goal, should be based on accurate scientific information rather than misrepresented statistics.