"You can take the frog out of the pond, but you cannot take the pond out of the frog." - Candace Savage

Supplementary videos

Mandarin ducklings jump from tree: imprint on mom (BBC Planet Earth)
Giant Pacific Octopus altruistic behavior: she starves to death (27:35)
Australian Giant Cuttlefish cross-dressing "cuckold" sneakers (25:10)
Bullfrog dad shows parental care
Queen bee's wedding flight: phallus from drone is ripped out Peahen
Clark's Grebe: nuptial gift and courtship
Intersexual selection: Vogelkop Bowerbird seduction (BBC Life - Birds)
Intersexual selection: Caspian Terns mating (cloacal kiss)
Bush cricket (katydid) mating: sperm removal, then spermatophore (nuptial gift)
Hermaphrodite leopard slugs mating in midair
Elephant seal beachmaster: size matters
Silkworm moths mating: they can no longer fly to find a mate in the wild
Oxytocin: the "cuddle chemical"
Honey bee waggle dance: visual and mathematical communication
New Caledonian Crow uses meta-tool (PBS Nature "A Murder of Crows") 18:30-20:05
'007′ the Crow solves 8-step puzzle

Extra credit readings

• Looks Matter Science News 10/1/05
• The Way to a Female Katydid's Heart? Offer Her Food LiveScience 9/27/11
• Why katydid girls fight over boys CBC News 10/7/11
• Oxytocin increases trust in humans Nature 6/2/05
• Pill Users Choose 'Wrong' Sex Partners WebMD 8/12/08
• Gay Men Respond to Male Pheromones Motherboard 5/1/14
• Lesbians Respond Differently to Human Pheromones National Geographic News 5/8/06
• Waggle Dance Controversy Resolved By Radar ScienceDaily 5/12/05
• Bee ocelli used for orientation BeeInformed 10/26/11

Additional material

• Katydid courtship: females eat spermatophore