Select serotonin reuptake inhibitors can improve a lobster’s mood and behavior.

Evidence

A lobster with high levels of serotonin and low levels of octopamine is a cocky, strutting sort of shellfish, much less likely to back down when challenged. … When a lobster that has just lost a battle is exposed to serotonin, it will stretch itself out, advance even on former victors, and fight longer and harder. — Jordan B. Peterson, 12 Rules for Life An Antidote to Chaos, 118

Categorization

• corroborated: 2 independent passages support this claim — Jordan B. Peterson, 12 Rules for Life An Antidote to Chaos, 118
• XREF: connects to: Loss can fundamentally alter a lobster’s brain structure and behavior. — Jordan B. Peterson, 12 Rules for Life An Antidote to Chaos, 115