Scramble competition:

• Spotted salamanders (Ambystoma maculatum)
  https://www.youtube.com/watch?v=v9eQNFiRPnM
• Moor frogs (Rana arvalis)
  https://www.youtube.com/watch?v=4NuteBxLLR8
• Green sea turtles (Chelonia mydas)
  https://vimeo.com/117141163
• Red-sided garter snakes (Thamnophis sirtalis parietalis)
  https://www.youtube.com/watch?v=xSO4ooNN_MY

Courtship of the crested newt (Triturus cristatus)
http://www.arkive.org/great-crested-newt/triturus-cristatus/video-09.html
This video shows a courtship display by a male, spermatophore transfer, egg deposition, and hatching.

Male–male combat:

• European adder (Vipera berus)
  http://www.arkive.org/adder/vipera-berus/video-11.html
• Green frogs (Rana clamitans) wrestling
  https://www.youtube.com/watch?v=LctS9U6oWBg The bonks are advertisement calls from other males in the pond, the growl is an aggressive call.
• Bullfrogs wrestling
  https://www.youtube.com/watch?v=u7Cpjgx9ux4
• Strawberry dart poison frogs wrestling
  https://www.youtube.com/watch?v=MQV882H11WY
• A territorial male Galápagos marine iguana (Amblyrhynchus cristatus) chases intruding males from his harem
  http://www.arkive.org/galapagos-marine-iguana/amblyrhynchus-cristatus/video-12.html