Pies: Pitter patter

Evidence: 39 • authority: 88

What Is behind Changes in Resting Heart Rate and Heart Rate Variability? A Large-Scale Analysis of Longitudinal Measurements Acquired in Free-Living. The aim of this study was to investigate the relationship between heart rate and heart rate variability (HRV) with respect to individual characteristics and acute stressors. In particular, the relationship between heart rate, HRV, age, sex, body mass index (BMI), and physical activity level was analyzed cross-sectionally in a large sample of 28,175 individuals. Additionally, the change in heart rate and HRV in response to common acute stressors such as training of different intensities, alcohol intake, the menstrual cycle, and sickness was ana…

Evidence: 39 • authority: 92

Resting heArt and respIratory rates in dogs in their natural environment: new insights from a long-term, international, prospective study in a COhort of 703 dogs using a biometric device for LongitudinaL non-invasive cARdiorespiratory monitoring (the AI-COLLAR study).. Background Wearable devices are increasingly used in human medicine to monitor various cardiovascular parameters and support heart health. Similar tools have recently emerged in veterinary medicine. However, their current limitation is the lack of large-scale data in healthy animals, a prerequisite for identifying potentially pathological variations using artificial intelligence (AI)-based algorithms. Objectives To establish…

Evidence: 32 • authority: 88

Temporal changes in resting heart rate before and after heart failure decompensation in a large real-world population of patients with reduced ejection fraction. Abstract Background Diagnostic parameters measured in implantable cardioverter defibrillators (ICD) and cardiac resynchronization therapy defibrillators (CRTD) have been shown to change before and after heart failure (HF) events with fluid overload. Purpose We investigated the temporal characteristics of nighttime heart rate, as a surrogate of resting heart rate, before and after HF events in a large real-world cohort of patients with ICD/CRTD devices. Methods We linked a de-identified database of aggregated electronic health recor…

Evidence: 26 • authority: 72

The domestication of the dog was the process which resulted in the emergence of the domestic dog as a species (Canis familiaris). This included the dog's genetic divergence from the wolf, its domestication, and the emergence of the first dogs. Genetic studies suggest that all ancient and modern dogs share a common ancestry, descending from an ancient, now-extinct wolf population – or closely related wolf populations – which was distinct from the modern wolf lineage. The dog's similarity to the grey wolf is the result of substantial dog-into-wolf gene flow, with the modern grey wolf being the dog's nearest living relative. An extinct Late Pleistocene wolf may have been the ancestor of the do…

Evidence: 26 • authority: 92

Exercise-induced cardiac remodeling in farm dogs: A comparative echocardiographic and electrocardiographic study.. Objectives: To compare cardiac structure and function of healthy indoor dogs, healthy active farm dogs, and indoor dogs with structural heart disease, and to investigate whether cardiovascular differences are lifestyle-related. Materials and Methods: Thirty-nine client-owned dogs (1-15 years old) were enrolled between January and March 2026. Dogs were grouped into healthy indoor dogs ( n = 10), active farm dogs ( n = 14), and indoor dogs with structural heart disease ( n = 15). Physical exam, electrocardiography, and transthoracic echocardiography were performed in all dogs. Co…

Evidence: 20 • authority: 88

Resting heart rate and heart rate variability in cardiovascular aging: Biomarkers and potential therapeutic targets. Cardiovascular aging is characterized by progressive loss of regulatory capacity, reduced physiological reserve, and increased vulnerability to stress and disease. Resting heart rate (RHR) and heart rate variability (HRV) provide complementary measures of cardiac automaticity and autonomic regulation, capturing important dimensions of cardiovascular aging. Comparative and epidemiological evidence demonstrates that elevated RHR and reduced HRV predict morbidity and mortality across species and human populations, reflecting cumulative physiological stress and declining regulato…

Evidence: 20 • authority: 72

The Great Dane is a German breed of large mastiff-sighthound, which descends from hunting dogs of the Middle Ages used to hunt bears, wild boar, and deer. They were also used as guardian dogs of German nobility. Along with the Irish Wolfhound, it is among the tallest dog breeds in the world.

Evidence: 20 • authority: 72

The Dogue de Bordeaux, also known as the Bordeaux Mastiff, French Mastiff or Bordeauxdog, is a large French mastiff breed. A typical brachycephalic mastiff breed, the Bordeaux is a very powerful dog, with a very muscular body.

Evidence: — • authority: 38