Invertebrate animals

Invertebrate animals

In terms of the number of species, this group of animals is larger than the group of animals with a vertebral column. The animals found in this group have no vertebral column.

Examples of animals without a vertebral column

Examples of animals without the vertebral column are arthropods, including grasshoppers, cockroaches, ants, millipedes and butterflies.

Other invertebrates

Other invertebrates include earth worms, snails, squids and octopuses. These animals are found in terrestrial and aquatic habitats. If you do an investigation in your environment you will realize that these animals are found everywhere.

Arthropods

Arthropod is a group of invertebrates with an external skeleton, a segmented body and paired appendages. Examples of the animals found in the arthropod group are crabs, grasshoppers, spiders, scorpions and millipedes. They constitute the largest group of animals. The second group is that of worms. Some groups of worms live in the bodies of other animals such as human beings, dogs and chickens, while others live in water or in the soil.

The third group is that of snails and squids. Some of the members of this group live in dry environment while others live in water. Some of the animals in this group live in salt water, for example squids.

Creeping Burgundy or Roman snail and red slug