What kind of animal does not have a backbone or spine?

invertebrate
Sponges, corals, worms, insects, spiders and crabs are all sub-groups of the invertebrate group – they do not have a backbone.

What is not an animal?

animal means a vertebrate animal, and includes a mammal, bird, reptile, amphibian and fish, but does not include a human being. Humans may be excused from this definition on pragmatic grounds, as separate acts on human ethics in research are in place. However, invertebrate animals are wholly excluded.

What animals have no bones?

Animals without backbones are called invertebrates. They range from well known animals such as jellyfish, corals, slugs, snails, mussels, octopuses, crabs, shrimps, spiders, butterflies and beetles to much less well known animals such as flatworms, tapeworms, siphunculids, sea-mats and ticks.

How do invertebrates breathe?

Many invertebrates use gills as a major means of gas exchange; a few, such as the pulmonate land snail, use lungs. Almost any thin-walled extension of the body surface that comes in contact with the environmental medium and across which gas exchange occurs can be viewed as a gill.

What animals dont have brains?

Some of the other animals that survive without brains include the sea star, sea cucumber, sea lily, sea urchin, sea anemone, sea squirt, sea sponge, coral, and Portuguese Man-O-War. A brain is basically what results when a large group of nerve cells called neurons form one large cluster.

Are fish animals Yes or no?

Fishes are a group of animals that are completely aquatic vertebrates that have gills, scales, swim bladders to float, most produce eggs, and are ectothermic. Sharks, stingrays, skates, eels, puffers, seahorses, clownfish are all examples of fishes.

Can bugs live in your lungs?

These ‘pockets’ in the airways mean that mucus gets trapped. The trapped mucus doesn’t get removed as quickly as usual and this allows bugs that land in the lung to stay down in the lungs. Once the bugs grow to a certain level a chest infection or flare up occurs.

Do insects drown?

Insects do not drown because they don’t breathe through their mouth like we humans. However, if an insect is underwater for too long it will eventually die.

Which animal is not born alive?

Mammals – Almost every mammal gives live birth (except the platypus and the echidna).

Can you live on land and water?

Amphibians are vertebrates (animals with backbones) which are able, when adult, to live both in water and on land. Unlike fish, they can breathe atmospheric oxygen through lungs, and they differ from reptiles in that they have soft, moist, usually scale-less skin, and have to breed in water.