Depression in dogs and cats: How to detect it and not confuse these behaviors with laziness

Sudden changes in a pet's behavior, such as a loss of interest in play, increased sleeping, or a general disinterest in once-loved activities, can be misinterpreted by owners as mere sadness or laziness. However, animal behavior specialists caution that these signs might point to more complex emotional states requiring professional attention.

While depression is well-studied in humans, its identification and definition in veterinary medicine remain subjects of ongoing debate. The primary challenge lies in the inability of dogs and cats to communicate their feelings verbally, forcing veterinarians to interpret physical and behavioral cues. Lore Haug, a veterinarian specializing in animal behavior, notes that while it's difficult to gauge the extent to which animal emotional states mirror human depression, it's probable that animals do experience some form of it.

For dogs, potential warning signs include persistent changes over one to two weeks, such as a diminished interest in previously exciting activities, alterations in appetite or sleep patterns, and a reduced response to environmental stimuli. However, experts stress that these symptoms are not definitive indicators of depression. Loss of appetite, apathy, fatigue, or social withdrawal can also be manifestations of physical illnesses, pain, or neurological issues.

Therefore, Oscar Cortadellas, an associate professor in the Department of Animal Medicine and Surgery, emphasizes the necessity of a comprehensive evaluation before attributing these signals to an emotional disorder. Clinical analysis aims to first rule out organic diseases that could explain the observed behavioral changes. Significant disruptions in a pet's routine, such as moving house, the death of a family member, the arrival of a new baby or pet, separations, or prolonged changes in household dynamics, are frequently identified as triggers for distress. Even seemingly minor changes for humans, like a shift in schedule or rearranged furniture, can pose challenges for some animals.

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it's probable that animals do experience some form of depression, although it is difficult to know to what extent their emotional state is similar to that of a human with that diagnosis.