A B S T R A C TFew studies have sought to describe cat elimination behavior in detail and much of the information presently available focuses on factors that potentially cause cats to reject a litter box. Thus, the ethograms published in the current veterinary and scientific literature largely focus on macro behaviors (e.g., enter box, dig, squat, cover, and exit box) and lack the detail necessary to make distinctions between types of litter box experiences for cats. To facilitate our understanding of what positive and negative litter box experiences look like for cats, we observed cats eliminating in both an enriched ("positive") and in a clinic-like ("restricted") environment. Our results reveal that cat elimination behavior is complex and may include up to 39 different behaviors expressed during urination and defecation events. We further evaluated each event, examining the behaviors occurring pre-, during, and post-elimination as a means to better understand the behaviors associated with the appetitive, consummatory, and post-consummatory phases of the reward cycle around elimination. In doing so, we found clear differences in behavior at different stages of the elimination sequence between our two environments. In general, the elimination sequence was prolonged in the clinic-like environment compared to the enriched environment (P < 0.005) and most of the extra time was spent interacting with the box post-elimination (P < 0.005). In the clinic-like environment cats were hesitant to enter the box, spent a considerable amount of time pawing at surfaces other than the litter (P < 0.02) and spent a great deal of time sniffing eliminations postelimination (P < 0.005). In addition, cats in the clinic-like environment had less frequent urination events and their events were longer in duration than when in the enriched environment (P < 0.0039). Thus, although seemingly counterintuitive, a relatively brief elimination sequence may be indicative of a more positive litter box experience. In addition, when given the opportunity cats will utilize a large amount of space during their elimination sequence. Despite popular perception that cats will immediately turn to out-of-box elimination if they are dissatisfied with their litter box environment, we discovered that cats will continue to use a box (and not eliminate outside the box) even when their behavior is indicative of frustration.

It is commonly assumed that cats actively avoid eliminated materials (especially in multi-cat homes), suggesting regular litter box cleaning as the best defense against out-of-box elimination. The relationship between previous use and litter box appeal to familiar subsequent users is currently unknown. The purpose of this study was to investigate the relationship between previous litter box use and the identity of the previous user, type of elimination, odor, and presence of physical/visual obstructions in a multi-cat household scenario. Cats preferred a clean litter box to a dirty one, but the identity of the previous user had no impact on preferences. While the presence of odor from urine and/or feces did not impact litter box preferences, the presence of odorless faux-urine and/or feces did - with the presence of faux-feces being preferred over faux-urine. Results suggest neither malodor nor chemical communication play a role in litter box preferences, and instead emphasize the importance of regular removal of physical/visual obstructions as the key factor in promoting proper litter box use.

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ObjectivesThe aim was to characterize the behaviour and faecal glucocorticoid metabolite (FGM) responses of six cats (Felis catus) to single caging for 30 days.DesignIn this observational study, changes in outcome measures were monitored with habituation to caging. Continuous focal observations of the activity, location in the cage, and posture were conducted from video recordings for one 24-hour period/week/cat. Cat-Stress-Scores were recorded daily. All faecal samples were collected for analysis of FGM.ResultsThe percentage time spent eating increased, while percentage time spent grooming decreased, from week 1 to week 2. Cat-Stress-Score declined significantly from week 1 to week 2. FGM concentrations were significantly greater in week 1 than in week 5. A posthabituation time budget of the behaviour of the cats in the single cages showed that inactivity dominated the time budget and the cats were located on the shelf almost half of the time.ConclusionsResults suggests that a shelf was a resource of value to the cats, and that its inclusion in enclosure design is important. Quantitative and qualitative behavioural data indicated that there was an initial stress response to caging that stabilised after the first week, while FGM concentration took longer to stabilise.

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