I hope many people answer this one ^^ But my personal favorite is the jumping spider. There are many species, and I won´t go into that here, but seriously, look them up - they´re adorable. One of them was also awarded the title of most intelligent arthropod!
invertebrate - has exoskeleton
An invertebrate.
It is an invertebrate 
no
The octopus is an invertebrate... It has no skeleton.
A bullfrog is not an invertebrate; it has a spine.
seriously? wow....... did you pass 4th grade? invertebrate
An invertebrate doesnt have a backbone. A vertebrate has a backbone.
Crabs are invertebrate!Say the yeti crab has no backbone or spine so it is an invertebrate! Not vertebrate.Yes, all crabs are invertebrates, having an external skeleton (exoskeleton).
invertebrate
invertebrate
An invertebrate.