1. Inter-male aggression with regard to polygynous mating system in Pampean grassland mouse, Akodon azarae (Cricetidae: Sigmodontinae)

   • Florencia Bonatto
   • José Coda
   • Andrea Steinmann

   Article 02 April 2013 Pages: 223 - 231

   

2. Female tawny-bellied seedeaters do not prefer more colorful males in choice experiments

   • Carolina Facchinetti
   • Juan Carlos Reboreda

   Article 02 April 2013 Pages: 233 - 238

   

3. Breeding pattern and nest guarding in Sicyopterus lagocephalus, a widespread amphidromous Gobiidae

   • N. Teichert
   • P. Keith
   • P. Gaudin

   Article 19 April 2013 Pages: 239 - 247

   

4. Asynchronous hatching and brood reduction by filial cannibalism in the burying beetle Nicrophorus quadripunctatus

   • Mamoru Takata
   • Satoshi Koyama
   • Hajime Fugo

   Article 21 April 2013 Pages: 249 - 254

   

5. Seismic communication in demon African mole rat Tachyoryctes daemon from Tanzania

   • Ema Hrouzková
   • Veronika Dvořáková
   • Radim Šumbera

   Article 01 May 2013 Pages: 255 - 259

   

6. Area utilization patterns of humpback dolphins (Sousa plumbea) in Richards Bay, KwaZulu-Natal, South Africa

   • Mark Keith
   • Shanan Atkins
   • Leszek Karczmarski

   Article 17 May 2013 Pages: 261 - 274

   

7. Condition dependence and trade-offs of sexual versus non-sexual traits in an insect

   • J. Guillermo Jiménez-Cortés
   • Alex Córdoba-Aguilar

   Article 30 May 2013 Pages: 275 - 284

   

8. Partitioning of space, habitat, and timing of activity by large felids in an enclosed South African system

   • Bogdan Cristescu
   • Ric T. F. Bernard
   • Jens Krause

   Article 25 May 2013 Pages: 285 - 298

   

9. Experimental evidence of habitat selection and territoriality in the Amazonian whip spider Heterophrynus longicornis (Arachnida, Amblypygi)

   • Tiago Jordão Porto
   • Paulo Enrique Cardoso Peixoto

   Article 29 June 2013 Pages: 299 - 304

   

10. Mother–calf interactions and social behavior development in Commerson’s dolphins (Cephalorhynchus commersonii)

    • Mai Sakai
    • Tadamichi Morisaka
    • Shiro Kohshima

    Article Open access 04 July 2013 Pages: 305 - 313

    

11. Decision tree classification of behaviors in the nesting process of green turtles (Chelonia mydas) from tri-axial acceleration data

    • Hideaki Nishizawa
    • Takuji Noda
    • Masato Kobayashi

    Article 06 July 2013 Pages: 315 - 322

    

12. Maternal behavior and early development of pampas deer (Ozotoceros bezoarticus) fawns in a semi-captive environment

    • Daniel E. Olazábal
    • Matías Villagrán
    • Rodolfo Ungerfeld

    Article 23 July 2013 Pages: 323 - 330

    

13. First report of alloparental care in the Key Largo woodrat (Neotoma floridana smalli)

    • C. J. Wheaton
    • C. Alligood
    • A. Savage

    Short Communication 07 June 2013 Pages: 331 - 334

14. Sex differences in the electrocommunication signals of Sternarchogiton nattereri (Gymnotiformes: Apteronotidae)

    • W. W. Ho
    • C. R. Turner
    • G. T. Smith

    Short Communication 16 July 2013 Pages: 335 - 340

    

15. Gourmand New Caledonian crows munch rare escargots by dropping

    • Keita D. Tanaka
    • Yuji Okahisa
    • Keisuke Ueda

    Short Communication 16 July 2013 Pages: 341 - 344

    

16. Reviewers of the Journal of Ethology for volume 31

    Acknowledgment 22 August 2013 Pages: 345 - 346