Serotonin imbalance is not the cause of depression.
Also serotonin does diffrent thinfs in different species, especially if they aren't closely related to one another.
Other than that I agree that probably most animals can get some kind of depression or depression like symptoms.
fuckthiscentury175 t1_irm8mp5 wrote
Reply to comment by Not_A_SalesmanOrNarc in Can Elks get depression? Are there many studies that explore sadness in mammals? by Somebodynobody29
Serotonin imbalance is not the cause of depression. Also serotonin does diffrent thinfs in different species, especially if they aren't closely related to one another.
Other than that I agree that probably most animals can get some kind of depression or depression like symptoms.