Effects of Thyroidal Disturbance on the Behavior of Domestic Dogs (Canis Lupus Familiaris)

Hypothyroidism is not uncommon in dogs, but it is actually very often diagnosed in elderly dogs. When and how does the disease start? What are the first recognizable signs? The first symptoms are usually changes in the behavior. First, these changes are quite subtle, but as the illness progresses, they can get very grave. We do often hear from the worried owners, that their report of a behavioral change to their vet is often ignored, not taken seriously or simply interpreted as unsteady or insufficient dog training/ education. This not taking seriously of the first signs is very concerning and a big problem in many ways. It is delaying the finding of the right diagnosis and treatment, which leads to suffering of the animal and the owner. In some cases, it leads to giving the dog up as an unbearable danger to the family. So the dog, who is only ill and could be back to normal with the right medical treatment, and finally ends up in a dog shelter or a new family. The common understanding is, that hypothyreoidism is an illness solely occurring in the elderly dog. In contrast to this, the authors found out, that thyroidal problems occur already at relatively young ages. This is a very important finding, considering that many clinically practising veterinarians expect hypothyreoidism only in the aged or elderly dog and will not run any diagnostics in relatively young or middle-aged animals. The authors also found significant differences in the personality traits of emotional stability and extraversion. Therefore, we would like to expand the existing studies, so that this widely underestimated topic finally comes to the fore and hopefully, in the future the right diagnostcal steps can be taken at an early stage of the disease

The use of mantrailing dogs in police and judicial context, future directions, limits and possibilities: A law review

Abtract The extraordinary capabilities of the canine nose are increasingly being used by law enforcement agencies in many countries to solve and reconstruct crimes. As a result, this type of forensic evidence can be and is still being challenged in the courts. So far, only a few publications have addressed the jurisprudence concerning mantrailing. We provide an overview of the jurisprudence in Germany and the USA, as well as insights from France. Relevant databases were searched, and 201 verdicts from Germany and 801 verdicts from the USA were analyzed. As a result, 16 published verdicts on the topic of mantrailing were found for Germany, and 44 verdicts since 2010 were found for the USA. The use of mantrailers and human scent discrimination dogs is employed in the investigative process in all three countries. The results derived from these methods are admissible as evidence in court, albeit not as sole evidence

Factors Influencing Isolation Behavior of Dogs: A Holder-Based Questionnaire and Behavioral and Saliva Cortisol Responses during Separation

This study examined how separation behavior differs between dogs with and without separation-related problem behavior (SRB) and the possible risk factors. The study consisted of an online survey with 940 dog holders, which, in addition to demographic facts, also includes personality, emotional disposition and the attachment by the holder. Furthermore, a separation test was carried out with six non-SRB dogs over a maximum of 6 h, in which behavior and cortisol were determined. The questionnaire revealed that SRB dogs differed significantly from non-SRB dogs regarding the following factors: symptoms with at least a medium effect size such as restlessness, excitement, whining, howling, lip licking, barking and salivation, time to relax after separation, pessimism, persistence, excitability, calmness, separation frequency, greeting of holder and type of greeting. There were several other differences, but with weak effect sizes. The test showed that non-SRB dogs were mostly inactive during separation (lying resting and lying alert). Vocalization was almost non-existent. Behavior and cortisol did not change significantly over the different time periods. The data demonstrated typical symptoms and possible risk factors, some of which may be avoided or changed to improve animal welfare

Impact of Dog’s Age and Breed on Dog Owner’s Physical Activity: A German Longitudinal Study

Dog ownership contributes positively to physical activity (PA). The impact of different dog breeds and age on PA is less investigated in longitudinal studies. This study aimed to evaluate PA changes in dog owners as their dogs’ ages increased and to explore whether there are differences in PA between owners of different breeds over a three-year period. Owners of different dog breeds were categorized into nine groups according to the perceived energy level and size of the breed. PA was monitored using an online questionnaire for three consecutive years. Linear mixed models (LMM) showed a small, but significant decrease in total PA, leisure time walking, dog-related PA and dog walking over three years. No decreases were found if only participants who attended at all time points were included. In all LMM analyses, a significant relationship between the dog breed and the outcomes of PA were shown. At baseline, dog owners performed different types of activities depending on their dog breed. In conclusion, owners of different dog breeds differ in their types of PA. The study emphasizes that age, size and energy level of the dog does not per se have an impact on dog owners PA

The Long-Term Influence of Puppy Acquisition on Physical Activity: Results of a 3-Year, Longitudinal, Pilot Study

Dog ownership has been associated with increased levels of physical activity (PA), including increases in total PA and walking time in some but not in all studies. These earlier studies did not consider puppy acquisition, in particular, and were limited to a maximum of 10 months duration. The purpose of the current pilot study was, therefore, to analyze long-term changes in participants’ PA behavior after puppy acquisition. Participants who acquired a puppy from one of nine preselected breeds differing in size and energy level were included. PA was assessed at baseline and 6, 12, 24 and 36 months after puppy acquisition using an online questionnaire. Participants, who were initially included, did not differ in their PA at baseline (n = 38). In the group that completed the trial (n = 11) total PA, leisure time walking, total dog-related PA, and total dog walking increased within the first two years and decreased while remaining above baseline values during the last year, coinciding with the COVID-19 pandemic. Non-dog-related PA did not change over time. We conclude that the acquisition of a puppy increases PA and thus, could have a long-lasting positive effect on physical health