In mammals - including us humans - sperm are surprisingly picky about temperature, thriving best in conditions a few degrees ...

All mammals have a particular protein on the surface of sperm called CatSper. It controls the entry of the particles needed ...

Sperm swim faster in high temperature environments; aging ovaries slowly lose egg support. Both affect fertility differently.

Activation of sperm surface protein . Research on mice revealed that a particular protein, found in all mammals called ...

Gorillas social bonds can help or hurt. Females in small groups stay healthier with strong ties. In groups, they get sick but ...

Animals that rely exclusively on parthenogenesis to reproduce, like the flowerpot snake, are called obligate parthenogens, ...

On the flip side, parthenogenesis eliminates the male contribution by sourcing all ... diploid (most animals are diploid, especially mammals like humans) — the flowerpot snake was triploid ...

Temperature emerged as a likely trigger. Mammals have evolved ways to keep male reproductive organs cooler than body temperature—dolphins use their dorsal fins to cool blood before it reaches their ...

Why do cats generally live longer than dogs? New research suggests that longer lifespans of mammals like cats could be linked to their bigger brains and more complex immune systems.