For lots of people, this time of year can bring a definite case of the winter blues. Seasonal affective disorder (SAD) is a type of depression that's related to changes in the seasons. Common symptoms include lack of energy, being antisocial, feeling anxious or angry, loss of interest in things that usually bring joy and even suicidal thoughts.
According to an expert, it's not just humans that can experience SAD, dogs can suffer from it in the winter too. Carolyn Menteith, animal behaviourist at tails.com, told the Mirror : "Many dogs do get SAD, or depressed, in the winter but it isn't about the cold, the rain or the dark – it's all about us."