In the hood, when it's time to eat,
 Animals gotta choose their meat,
 They use their senses to evaluate,
 But internal states also facilitate,
 The way they process what they see,
 And make a decision, you and me,
 We don't understand it fully yet,
 But in the fly brain, we can bet,
 Metabolic state plays a big part,
 In how the fly processes from the start,
 But reproductive state's local too,
 In how the fly knows what to do,
 These two states work together,
 To guide the fly to eat the better,
 Food, with a focus on protein,
 We found a region, it's called "borboleta,"
 It drives the fly to make the choice,
 And now we know, it's no small noise,
 Internal states shape behavior,
 And with this knowledge, we can savor,
 A better understanding of the way,
 Animals make decisions every day.