Biological and behavioural considerations Signiicant differences exist between domesticated companion animal species such as dogs and cats and exotic non-domesticated pet species, which include all reptiles. Biologically, dogs and cats, along with other commonly domesticated animals including cattle and horses, possess essentially genetically 'pre-adapted' and 'soft-wired' traits allowing them to coexist ('lifeshare') with other species and the captive context. By contrast, reptiles possess few pre-adaptive features and are hard-wired with innate biological, behavioural and psychological needs that preset them to life in nature. An inescapable factor that dramatically and negatively impacts on the biological suitability of reptiles to captivity is that, unlike dogs and cats, reptiles will almost universally be 'life-restricted' in small, arbitrarily and poorly conceived vivariums maintained by non-professionals. These major biological considerations and management deiciencies imbue the veterinary surgeon with onerous duties to look for overt and emerging, as well as occult, health (physical, behavioural, psychological and husbandry) issues associated with reptiles that are presented to them, irrespective of the reason for consultation.
Various establishments exist in which animals are held for a variety of reasons. Historically, the management and inspection of animals in commerce and in private keeping have involved a considerable degree of arbitrary evaluation based on the personal experience of the vendor, keeper, advisor, or inspector. Accordingly, relevant protocols and standards are subject to considerable variation. Relatedly, diversity of traded and privately kept species generates significant challenges for those responsible for facility management and inspection alike. Animal welfare and public health and safety are constant and major concerns that require objective methodologies to monitor and control. This report focuses on establishments concerned with the boarding, breeding, storage, vending or handover of animals intended for human “companions” or “pets”, and aims to provide universal objective information for essential husbandry, inspection protocols and an allied inspection assessment tool for scoring establishments.
Pet animal management is subject to varied husbandry practices and the resulting consequences often impact negatively on animal welfare. The perceptions held by someone who proposes to keep an animal regarding the ease or difficulty with which its biological needs can be provided for in captivity are key factors in whether that animal is acquired and how well or poorly it does.
In a review summary on page 450, Pasmans and others discuss the future of keeping reptiles and amphibians as pets. Here, discuss the animal welfare and public health implications of exotic pet business.
Snakes are sentient animals and should be subject to the accepted general welfare principles of other species. However, they are also the only vertebrates commonly housed in conditions that prevent them from adopting rectilinear behavior (ability to fully stretch out). To assess the evidence bases for historical and current guidance on snake spatial considerations, we conducted a literature search and review regarding recommendations consistent with or specifying ≥1 × and <1 × snake length enclosure size. We identified 65 publications referring to snake enclosure sizes, which were separated into three categories: peer-reviewed literature (article or chapter appearing in a peer-reviewed journal or book, n = 31), grey literature (government or other report or scientific letter, n = 18), and opaque literature (non-scientifically indexed reports, care sheets, articles, husbandry books, website or other information for which originating source is not based on scientific evidence or where scientific evidence was not provided, n = 16). We found that recommendations suggesting enclosure sizes shorter than the snakes were based entirely on decades-old ‘rule of thumb’ practices that were unsupported by scientific evidence. In contrast, recommendations suggesting enclosure sizes that allowed snakes to fully stretch utilized scientific evidence and considerations of animal welfare. Providing snakes with enclosures that enable them to fully stretch does not suggest that so doing allows adequate space for all necessary normal and important considerations. However, such enclosures are vital to allow for a limited number of essential welfare-associated behaviors, of which rectilinear posturing is one, making them absolute minimum facilities even for short-term housing.
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