Some animals need better senses because they may have more predators or prey.
Mammals need well developed senses for the same reason that all animals need well developed senses. The goal of every organism is to survive and reproduce. Mammals are heterotrophs, so in order to survive, they must eat. And mammals must sense food in order to find and eat it. Also, mammals need some way of detecting danger, such as a predator or a poisonous plant, so well developed senses are needed. Finally, mammals must sense out a mate in order to reproduce.
all animals need water.some dont need as much as others do
no without eyes your others senses become higher and lots of people live with out eyes
They all do ... but you may be thinking of plants - they don't need animals to survive but animals need plants.
Some animals have no need of them, jellyfish for instance. Others have an exoskeleton, insects are an example.
you figure it out you need to to help you get smart and get a better education
I'm not exactly sure, but, I think that wolves have better smelling abilities than dogs because, they are more wild and really need to use their senses to hunt prey and to survive. Also, it depends which dog it is and what breed it is, some dogs have better smelling abilities than others.
Not always. Some butchers get slaughtered animals and divide these into the sale-able cuts. Others do slaughter animals.
some senses used by animals for migration are visual cues, solar navigation, magnetic fields, star navigation, and polarized light. There has been much evidence that magnetic fields play an important role in navigation.
Cattle don't really need other cattle, but they are happiest when with others of their kind since they are herd-oriented animals. They feel safest among others since they are prey animals, and for prey animals, the greatest defense against predators is staying in a group or herd.
if someone or something lives without needing to use its eyes it's other senses are increased to help it survive
Yes and no. Some animals can live in a zoo's. But others,like sharks,are at other places.