Dogs,Cats,Horses,Rabbits,Goldfish,Pigeons and Doves,guinea pigs,Canaries
The anterior pituitary gland produces growth hormone (GH), prolactin (PRL), follicle-stimulating hormone (FSH), luteinizing hormone (LH), adrenocorticotropic hormone (ACTH), and thyroid-stimulating hormone (TSH).
The posterior pituitary gland stores anti-diuretic hormone and oxytocin, both of which are actually produced in the hypothalamus.
A specialized animals inability to rapidly adapt to a changing environment
Advantage:
Result in variation among species
Disadvantage:
Slow process
The main difference is how they form the daughter cells during cytokinesis