Annals of Improbable Research

MAY | JUNE (volume 21, number 3)

Special Issue: Cats (and Dogs)

Comparative Meows,
Cat Rolling, Analyzed,
The Paradox of the 1,001 Cats…


The features marked with a star (*) are based entirely on material taken straight from standard research (and other Official and Therefore Always Correct) literature. Many of the other articles are genuine, too, but we don't know which ones.

Special Section: Cats (and Dogs)

Comparative Meows* – Alice Shirrell Kaswell
Cats Research Review* – Stephen Drew
Cats and Dogs Research Review* – Csikszentmihalyi Aeiou
Cat Predation in England* – Nan Swift
The Rolling of Domestic Cats* – Marc Abrahams

Improbable Research*

Is This Article Consistent With Hinchliffe’s Rule?* – Stuart Shieber

Improbable Research Reviews*

Improbable Research Review* – Dirk Manley
Improbable Medical Review*– Bertha Vanatian
Boys Will Be Boys* – Katherine Lee
Soft Is Hard* – Alice Shirrell Kaswell and Bissell Mango
Improbable Sex* – Marc Abrahams
Icky Cutesy Research Review* – Alice Shirrell Kaswell
May We Recommend: Microorganism Billiards* – Stephen Drew

News & Notes

New! Improbable Research Weekly Podcast and The 25th First Annual Ig Nobel Prize Ceremony
AIR Vents (letters from our readers)
Editorial Board
Teachers’ Guide
Puzzling Solutions: Heads! – Emil Filterbag
Ig Nobel Limericks: Sex, Knots, and Ostriches* – Martin Eiger
Subscriptions and eBooks for You and Your Colleagues
KIM CARTOON: “Time Flies” – Nick Kim
Index of Special Issues
Unclassified Ads

Some Coming Events

See WWW.IMPROBABLE.COM for details of these and other events:
June 5, 2015 Dead Duck Day Rotterdam, The Netherlands
June 2015 Tokyo, Japan
July 9, 2015 Ig Nobel tickets go on sale
September 17, 2015 25th First Annual Ig Nobel Prize Ceremony, Cambridge, MA, USA & live webcast
September 19, 2015 Ig Informal Lectures
Cambridge, MA, USA
October 2015 Vienna, Austria
December 2015 U Rhode Island

Every Day

Read something new and improbable every day on the Improbable Research blog, on our web site:

Every WEEK

Listen to or download the Improbable Research weekly podcast, at

On the Front Cover

A cat.

On the Back Cover

Two volunteers in an experiment to try to determine the effects of coffee-drinking on body size, Cambridge, Massachusetts, 2015. Photo: A.S. Kaswell, Improbable Research staff.

Do NOT follow this link or you will be banned from the site!