Evaluation of Oral Transmucosal Administration of Pentobarbital for Euthanasia of Conscious Wild Birds.

This prospective study evaluated oral transmucosal pentobarbital sodium at three doses in 110 wild-caught wild birds requiring euthanasia. Birds received transmucosal pentobarbital at five (430 mg/kg), six (516 mg/kg), and seven times (602 mg/kg) the intravenous dose for mammals. Time to first effects and loss of consciousness, presence of pupillary light and corneal reflexes, apnea, and asystole were recorded each minute. When asystole was not achieved at 5 minutes, IV pentobarbital was administered. Combining data for all doses, loss of consciousness occurred at a median (range) of 2 minutes (0-4.75 min), apnea at 3 minutes (0-6 min), and asystole at 4 minutes (0.5-5 min). Loss of consciousness and apnea occurred significantly faster in the 602 mg/kg dose group than in the 430 mg/kg group (p = 0.009, difference of 0.6 ± 0.2 min; p = 0.024, difference of 0.7 ± 0.3 min), respectively. Apnea and asystole were achieved in 80/110 birds within 5 minutes. Oral transmucosal pentobarbital results in rapid loss of consciousness and respiratory arrest and provides a reliable alternative euthanasia method compared to intravenous administration.

Perspectives of Canadian and American Cat Owners on Provision of Uncontrolled Outdoor Access for Owned Domestic Cats.

While uncontrolled outdoor access can increase opportunities for cat physical and mental stimulation, it can also increase risks of injury and illness, and result in predation of wild birds and small animals. In Canada and the United States, it is often recommended to keep cats indoors, but many owners still provide some level of outdoor access. The objectives of this study were to use a cross-sectional survey to explore the attitudes and practices of cat owners in Canada and the United States toward outdoor access and to identify factors that influence the provision of uncontrolled outdoor access. A convenience sample of cat owners (N = 7,838) were recruited to complete an online survey, and a mixed logistic regression model was used to examine associations between cat and owner-related factors, and uncontrolled outdoor access for cats, with province/state included as a random effect. In total, 57% of owners kept their cats indoors, and 43% provided some form of outdoor access, with 21% of total owners providing uncontrolled outdoor access. Provision of uncontrolled outdoor access was associated with factors related to cat characteristics (e.g., sex, breed, presence of health, and behavioral issues), the home environment (e.g., living with other pets, types of enrichment provided), owner perspectives on outdoor access (e.g., level of agreement with potential benefits and consequence of outdoor access), and owner demographics (e.g., gender, education, area of residence). For cats with uncontrolled outdoor access, few owners reported their cats having a collar or a microchip, suggesting a need to increase education about precautionary measures to protect the welfare of outdoor cats. Results reveal how owners are caring for their cats in terms of providing outdoor access and generate hypotheses for future research to examine the influence of the owner-pet bond and educational programs on owner practices around providing outdoor access.

Asymmetrical Cloacoplasty for the Treatment of Chronic Cloacal Prolapse in Psittaciformes: A Case Series.

Chronic cloacal prolapse is a common condition in psittacine birds, particularly in cockatoos and African grey parrots (Psittacus erithacus). Techniques to permanently reduce the prolapse have been developed and include cloacal sutures, percutaneous cloacopexy, and open circumcostal or rib cloacopexy. Several complications, some of which are life-threatening, have been reported with these tissue reduction techniques. Cloacoplasty surgeries have also been advocated, but most often as an adjunct therapy. Recurrence of cloacal prolapse may occur in traditional symmetrical cloacoplasty techniques since straining pressure remains. In this case series, 5 psittacine birds (2 male and 2 female umbrella cockatoos [Cacatua alba] and 1 male African grey parrot) with chronic recurrent cloacal prolapses were treated with a novel asymmetrical cloacoplasty technique. A semicircular excision at the mucocutaneous junction from the right side with a 2-layer closure reduced the cloacal opening by 50%-75%. A tension-relieving suture was applied to aid in healing of the incision. All 5 cases had successful outcomes with no recurrent prolapses (6 months to 3 years of follow-up), except for 1 case, due to incisional dehiscence. This animal underwent a second surgical procedure that incorporated the tension-relieving suture and has not had a recurrent prolapse in over a year. This asymmetrical cloacoplasty technique provides a simple but effective method of cloacal prolapse treatment and prevention in cases of recurrent and chronic cloacal prolapses, and creates a midline physical barrier not present in symmetrical cloacoplasties. Long-term complications may include cloacolith formation or dystocia in females, and therefore reproductive management of female birds is required.

Uveal amelanotic melanoma in a ragdoll cat.

A 13-year-old castrated male ragdoll cat's left eye was evaluated for dyscoria, iridal thickening and color change of 2 years duration, as well as elevated intraocular pressure. The primary lesion seen on ophthalmic examination was a pale pink-white mass observed in the dorsomedial aspect of a diffusely thickened iris. Metastatic workup revealed hepatic and splenic nodules, but cytology was inconclusive. The left eye was enucleated, and histopathology was consistent with uveal amelanotic melanoma.

Mélanome uvéal amélanotique chez un chat ragdoll. L'oeil gauche d'un chat mâle ragdoll castré âgé de 13 ans fut évalué pour dyscorie, épaississement iridien et changement de couleur présent depuis deux ans, de même que pour une pression intra-oculaire élevée. La lésion primaire vue lors de l'examen ophtalmique était une masse blanc-rosée pâle observée à l'aspect dorso-médial d'un iris épaissi de manière diffuse. Une vérification pour métastases révéla des nodules hépatiques et spléniques, mais la cytologie était non-concluante. L'oeil gauche fut énucléé et l'histopathologie était compatible avec un mélanome uvéal amélanotique.(Traduit par Dr Serge Messier).

Effect of a Standardized Four-Week Desensitization and Counter-Conditioning Training Program on Pre-Existing Veterinary Fear in Companion Dogs.

Many dogs show signs of fear during veterinary appointments. It is widely recommended to use desensitization and counter-conditioning training to reduce this fear. However, the efficacy of this method for reducing veterinary fear has not been examined. We assessed the effect of a standardized four-week training program on behavioural and physiological signs of fear in dogs with pre-existing veterinary fear. Owned dogs were randomly allocated to receive training (n = 15) or no training (n = 22; Control). Owners of dogs in the training group were instructed to perform exam-style handling on their dog and to visit the veterinary clinic weekly. Owners of control dogs were given no instructions. Fear responses were assessed before and after the training period by a blinded observer during clinic arrival and examination. Despite motivated owners volunteering to participate in the current study, 44% of owners were non-compliant to this training program. During examination, control dogs had higher odds (95% confidence Interval (CI)) of reduced posture compared to trained dogs (Odds ratio (OR): 3.79, CI: 1.03-16.3). Fear scores for trained dogs lowered during the second examination (p = 0.046), and 86.7% of dog owners reported a reduction in their dog's fear levels across the training period (p = 0.007). When entering the clinic (p = 0.002) and during examination (p = 0.002), trained female dogs had a higher rate of lip licking than control females. The training program did not influence temperature, heart rate, respiratory rate, avoidance, trembling, vocalizations, or willingness and encouragement to step on the scale. Results suggest that this four-week training program was mildly effective at reducing veterinary fear in dogs. Further research is necessary to explore the efficacy of longer, more intensive, and individualized training programs.

Echinococcus multilocularis in a wild free-living eastern chipmunk (Tamias striatus) in Southern Ontario: A case report and subsequent field study of wild small mammals.

Southern Ontario has recently been identified as a risk area for Echinococcus multilocularis, based on surveys of foxes (Vulpes vulpes) and coyotes (Canis latrans) which act as definitive hosts of the parasite. In this manuscript, we describe the first detection of E. multilocularis in an eastern chipmunk (Tamias striatus) in North America. This case, submitted to the Canadian Wildlife Health Cooperative (CWHC) in August 2016 as part of ongoing wildlife disease surveillance activities, represents the first report of alveolar echinococcosis in a wild, free living, intermediate host from southern Ontario, providing further evidence of an established sylvatic cycle of E. multilocularis in this region. The finding prompted a field investigation to identify additional cases of alveolar echinococcosis in small mammals in the summer of 2017. Echinococcus multilocularis was not detected in any of the 196 small mammals submitted to the CWHC from across southern Ontario or in any of the 43 small mammals trapped in the area where the infected chipmunk was found. However, given the suspected low prevalence and patchy distribution of E. multilocularis in small mammals, our negative results do not preclude the established presence of the parasite. This case emphasizes the importance of passive surveillance networks for monitoring new and emerging diseases in wildlife populations.