1 The posterior pituitary lobe releases two hormones that are produced in the hypothalamus:  Oxytocin, which is responsible for stimulation of milk ejection (milk letdown) and for stimulation of uterine smooth muscle contraction at birth.
Crayfish and crawfish are crustaceans living in freshwater with a great resemblance of the lobsters. However, their size is smaller compared to the lobsters.
Crayfish are omnivorous, so they eat both plants and animals. They are also scavengers and will eat dead things, as long as they are relatively fresh. Some favorite foods of crayfish are worms, insects, insect larvae, and the eggs of fish, frogs, toads, and salamanders.rayfish are omnivorous, so they eat both plants and animals. They are also scavengers and will eat dead things, as long as they are relatively fresh. Some favorite foods of crayfish are worms, insects, insect larvae, and the eggs of fish, frogs, toads, and salamanders.