intraspecies relations
1Bird vocalization — Bird song redirects here. For other uses, see Birdsong (disambiguation). A male Blackbird (Turdus merula) singing. Bogense havn, Funen, Denmark.   …
2Animal communication — Animal communication, and indeed the understanding of the animal world in general, is a rapidly growing field, and even in the 21st century so far, many prior understandings related to diverse fields such as personal symbolic name use, animal… …
3Animal sexual behaviour — This article is about the sexual behaviour of non human animals; see also Human sexuality and Sexual reproduction. Animal sexual behaviour takes many different forms, even within the same species. Among animals other than humans, researchers have …
4Swine influenza — This article is about influenza viruses in pigs. For the 2009 outbreak, see 2009 flu pandemic. For the 2009 human virus, see Pandemic H1N1/09 virus. Influenza (Flu) …
