Prion, Viral, Bacterial and Fungal Pathogens of Humans [VV210]; Non-drug Therapy and Prophylaxis of Humans [VV710]; Pets and Companion Animals [LL070]; Animal Behaviour [LL300]; Animal Health and Hygiene (General) [LL800]; Animal Welfare [LL810]; anxiety; animal assisted therapy; animal behaviour; animal welfare; pandemics; coronavirus disease 2019; human diseases; viral diseases; dogs; Severe acute respiratory syndrome coronavirus 2; man; Canis; Canidae; Fissipeda; carnivores; mammals; vertebrates; Chordata; animals; eukaryotes; Severe acute respiratory syndrome-related coronavirus; Betacoronavirus; Coronavirinae; Coronaviridae; Nidovirales; positive-sense ssRNA Viruses; ssRNA Viruses; RNA Viruses; viruses; Homo; Hominidae; primates; separation anxiety; dog owners; lockdown; animal behavior; behavior; animal rights; SARS-CoV-2; viral infections