67 Wolf Howling Is Mediated by Relationship Quality Rather Than Underlying Emotional Stress.
http://www.cell.com/current-biology/abstract/S0960-9822(13)00823-3
66 Wild Orangutan Males Plan and Communicate Their Travel Direction One Day in Advance.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0074896
65 Whooping cranes learn their annual migration routes from their neighbors.
http://www.sciencemag.org/content/341/6149/999.abstract
64 Reciprocity explains food sharing in humans and other primates independent of kin selection and tolerated scrounging: a phylogenetic meta-analysis.
http://rspb.royalsocietypublishing.org/content/280/1768/20131615.abstract
63 Environmental levels of oestrogenic and antiandrogenic compounds feminize digit ratios in male rats and their unexposed male progeny.
http://rspb.royalsocietypublishing.org/content/280/1768/20131532.abstract
62 Male infanticide leads to social monogamy in primates.
http://www.pnas.org/content/110/33/13328.abstract
61 Bottlenose dolphins can use learned vocal labels to address each other.
http://www.pnas.org/content/110/32/13216.abstract
60 Context-dependent hierarchies in pigeons.
http://www.pnas.org/content/110/32/13049.abstract
59 The patterns of colors in feathers are produced via temporal and spatial regulation of melanocyte stem cells.
http://www.sciencemag.org/content/340/6139/1442.abstract
58 Schooling Fish Under Attack Are Not All Equal: Some Lead, Others Follow.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0065784
57 Loggerhead Turtles (Caretta caretta) Use Vision to Forage on Gelatinous Prey in Mid-Water.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0066043
56 Locomotion dynamics of hunting in wild cheetahs.
http://www.nature.com/nature/journal/v498/n7453/full/nature12295.html
55 Mothers' stress levels in free-ranging red squirrels increase baby growth in anticipation of overcrowding.
http://www.sciencemag.org/content/340/6137/1215.abstract
54 Rats maintain an overhead binocular field at the expense of constant fusion.
http://www.nature.com/nature/journal/v498/n7452/full/nature12153.html
53 High flight costs, but low dive costs, in auks support the biomechanical hypothesis for flightlessness in penguins.
http://www.pnas.org/content/110/23/9380.abstract
52 Are Stripes Beneficial? Dazzle Camouflage Influences Perceived Speed and Hit Rates.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0061173
51 Referential gestures in fish collaborative hunting.
http://www.nature.com/ncomms/journal/v4/n4/full/ncomms2781.html
50 Surface wettability plays a significant role in gecko adhesion underwater.
http://www.pnas.org/content/110/16/6340.abstract
49 Human Breath Analysis May Support the Existence of Individual Metabolic Phenotypes.
http://www.plosone.org/article/info:doi/10.1371/journal.pone.0059909
48 A Tissue-Like Printed Material.
http://www.sciencemag.org/content/340/6128/48
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