Department of Physics, Chemistry and Biology (IFM)

The animals did not show any significant signs of increased stress or agitation due to expectation of the enrichment.

However both the Pallas’s cats and the cheetahs showed non-significant patterns of negative behaviours in relation to the enrichment. These findings warrant further investigation.

The fact that both the Pallas’s cats and the drills showed undesirable behaviour on the second day of delayed or withheld enrichment, indicates that two consecutive days of altered enrichment schedules might not be the optimal way of introducing variation in their schedule.