Perseus is a thinking lizard, and tends to take more complex routes when it comes to things like catching prey. He uses traps and other means to ensnare his food, otherwise he finds the whole thing dreadfully boring. He is a smooth talker and loves listening to himself talk at times. His voice is enough to sway his prey right into his gullet.
Being a thinking lizard means Percy is also quite fond of animals that have dedicated their lives to a higher cause.