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3.4  Indirect Benefits of Learning  43

  VetBooks.ir         Feeding beaviour
                            Breeding
                              Other
              Reduction in fear of humans
                       Social behaviour
             Physiology/disease resistance
                Recovery after brain injury
                    Stereotypy reduction
                 Stress/anxiety reduction
                      Cognitive function
                     General behaviour
                                   0      5       10      15      20     25      30      35
                                                    Number of published articles

             Figure 3.5  Indirect benefits of learning opportunities reported from the years 2005 to 2018 (note: some
             articles reported more than one benefit so these have been recorded as separate outcomes where applicable).
             Source: reproduced with permission of the authors.


             opportunities (Duyff 1999). Throughout a   expression of increased foraging involves the
             lifetime both humans and animals must    application of cognitive mechanisms, such as
             assimilate a wide range of information. The   environmental perception, memory, and
             concept of lifelong learning in humans sug-  problem solving.
             gests that learning becomes easier when   Perhaps the generalised benefits of learning
             embedded in a lifelong learning context,   opportunities provided to captive animals,
             learners can transfer knowledge  across   can  be  best  illustrated  when  considering
             related learning tasks and become more   learning opportunities that offer only intrin-
             experienced  and generalise  better (Thrun   sic rewards, i.e. the performance of behaviour
             1996); we learn to learn. Cognitive skills are   itself is rewarding unlike extrinsic learning
             ‘the mechanisms by which animals acquire,   opportunities such as feeding enrichment
             process, store, and act upon information from   that offer an external reward. Sensory enrich-
             the environment’ (Shettleworth 2001). These   ment provides a learning opportunity for the
             mechanisms allow for the collection of repre-  animal  but  offers  no  immediate  external
             sentational information about the world, and   reward, so could be considered  an intrinsic
             knowledge can be exploited by animals even   learning opportunity. For example black‐
             in the absence of the objects to which the   footed cats (Felis nigripes) spend longer inves-
             knowledge relates (Meehan and Mench      tigating a cloth impregnated with novel scents
             2007). As such cognitive functions are ‘higher   (nutmeg, catnip, or prey scent) compared to
             level controls’ of behaviour and it is difficult   control  (no scent)  cloths  (Wells and Egli
             to distinguish them from behavioural con-  2004). This behavioural response might be
             trols that are part of a direct link between   expected, as investigating a new scent could
             stimulus and response (Toates 2004). When   lead to an extrinsic reward, e.g. follow prey
             providing environmental enrichment its eval-  scent  =  find prey, but other general behav-
             uation often relies on the measurement of   ioural changes are also observed in the cats’
             behavioural indicators or a priori ‘goals’ set   activity budgets. Cats given scented cloths
             out; measuring foraging time might be used   show an increase in active behaviours such as
             to evaluate if a feeding device is successful   locomotion and exploring and a decrease in
             and thus enriching. Whilst the relationship   more sedentary behaviours during the scent
             between feeding device and increased forag-  conditions (Wells and Egli 2004); these addi-
             ing behaviour may appear to be simple, the   tional behavioural changes might be viewed
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