It is merely a lust of the blood and a permission 0707 of the will. Come, be a man! Drown thyself? Drown 0708 cats and blind puppies.
"Iago is trying to persuade Roderigo to give up his hopeless love for Desdemona and instead use his money to win her through other means. He is blunt and cynical, telling Roderigo to “be a man” by taking practical action rather than drowning himself in despair. The “drown cats and blind puppies” line is a vulgar, contemptuous way of telling Roderigo to stop being weak and pathetic"
Copilot is saying this was a choice of instinct for the most part.