Tuning In To Your Cat

Anyone who has ever had cats knows how difficult it can be to get them to do anything they don't already want to do. But it seems that the house cats themselves have had distinctly less trouble getting humans to do their bidding, according to a report published in the July 14th issue of Current Biology, a Cell Press publication.

The rather crafty felines motivate people to fill their food dishes by sending something of a mixed signal: an urgent cry or meowing sound embedded within an otherwise pleasant purr. The result is a call that humans generally find annoyingly difficult to ignore.

"The embedding of a cry within a call that we normally associate with contentment is quite a subtle means of eliciting a response," said Karen McComb of the University of Sussex. "Solicitation purring is probably more acceptable to humans than overt meowing, which is likely to get cats ejected from the bedroom." She suggests that this form of cat communication sends a subliminal sort of message, tapping into an inherent sensitivity that humans and other mammals have to cues relevant in the context of nurturing their offspring.

McComb said that she was inspired by her own cat, who consistently wakes her up in the mornings with a very insistent purr. She learned in talking with other cat owners that some of their cats too had mastered the same manipulative trick. As a scientist who already studied vocal communication in mammals, from elephants to lions, she decided to get to the bottom of it.

It turned out that wasn't so easy to do. The cats were perfectly willing to use their coercive cries in private, but when strangers came around they tended to clam right up. Her team therefore had to train cat owners to record their own cats' cries.

In a series of playback experiments with those calls, they found that humans judged the purrs recorded while cats were actively seeking food as more urgent and less pleasant than those made in other contexts, even if they had never had a cat themselves.

"We found that the crucial factor determining the urgency and pleasantness ratings that purrs received was an unusual high-frequency element - reminiscent of a cry or meow - embedded within the naturally low-pitched purr," McComb said. "Human participants in our experiments judged purrs with high levels of this element to be particularly urgent and unpleasant." When the team re-synthesised the recorded purrs to remove the embedded cry, leaving all else unchanged, the urgency ratings for those calls decreased significantly.

McComb said she thinks this cry occurs at a low level in cats' normal purring, "but we think that cats learn to dramatically exaggerate it when it proves effective in generating a response from humans." In fact, not all cats use this form of purring at all, she said, noting that it seems to most often develop in cats that have a one-on-one relationship with their owners rather than those living in large households, where their purrs might get overlooked by poorly trained people.

In those instances, she said, cats seem to find it more effective to stick to the standard meow.

The researchers include Karen McComb, University of Sussex, Brighton, U.K.; Anna M. Taylor, University of Sussex, Brighton, U.K.; Christian Wilson, University of Sussex, Brighton, U.K.; Benjamin D. Charlton, Zoo Atlanta, Atlanta, Georgia, GA.

Source:
Cathleen Genova
Cell Press

Veterinary Study Finds Aggressive Owners Have Aggressive Dogs

In a new, year-long University of Pennsylvania survey of dog owners who use confrontational or aversive methods to train aggressive pets, veterinary researchers have found that most of these animals will continue to be aggressive unless training techniques are modified.

The study, published in the current issue of Applied Animal Behavior Science, also showed that using non-aversive or neutral training methods such as additional exercise or rewards elicited very few aggressive responses.

"Nationwide, the No. 1 reason why dog owners take their pet to a veterinary behaviorist is to manage aggressive behavior," Meghan E. Herron, lead author of the study, said. "Our study demonstrated that many confrontational training methods, whether staring down dogs, striking them or intimidating them with physical manipulation does little to correct improper behavior and can elicit aggressive responses."

The team from the School of Veterinary Medicine at Penn suggest that primary-care veterinarians advise owners of the risks associated with such training methods and provide guidance and resources for safe management of behavior problems. Herron, Frances S. Shofer and Ilana R. Reisner, veterinarians with the Department of Clinical Studies at Penn Vet, produced a 30-item survey for dog owners who made behavioral service appointments at Penn Vet. In the questionnaire, dog owners were asked how they had previously treated aggressive behavior, whether there was a positive, negative or neutral effect on the dogs' behavior and whether aggressive responses resulted from the method they used. Owners were also asked where they learned of the training technique they employed.

Of the 140 surveys completed, the most frequently listed recommendation sources were "self" and "trainers." Several confrontational methods such as "hit or kick dog for undesirable behavior" (43 percent), "growl at dog" (41 percent), "physically force the release of an item from a dog's mouth" (39 percent), "alpha roll"physically -- rolling the dog onto its back and holding it (31 percent), "stare at or stare down" (30 percent), "dominance down" - physically forcing the dog down onto its side (29 percent) and "grab dog by jowls and shake" (26 percent) elicited an aggressive response from at least 25 percent of the dogs on which they were attempted. In addition, dogs brought to the hospital for aggressive behavior towards familiar people were more likely to respond aggressively to some confrontational techniques than dogs brought in for other behavioral reasons.

"This study highlights the risk of dominance-based training, which has been made popular by TV, books and punishment-based training advocates,"Herron said. "These techniques are fear-eliciting and may lead to owner-directed aggression."

Prior to seeking the counsel of a veterinary behaviorist, many dog owners attempt behavior-modification techniques suggested by a variety of sources. Recommendations often include the aversive-training techniques listed in the survey, all of which may provoke fearful or defensively aggressive behavior. Their common use may have grown from the idea that canine aggression is rooted in the need for social dominance or to a lack of dominance displayed by the owner. Advocates of this theory therefore suggest owners establish an "alpha" or pack-leader role.

The purpose of the Penn Vet study was to assess the behavioral effects and safety risks of techniques used historically by owners of dogs with behavior problems.

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Article adapted by Medical News Today from original press release.
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Source: Jordan Reese
University of Pennsylvania