Do you know what this is?

Do you know what this is?

Observation - Do you know what this is?. Description: We found this unknown grub thing. It is about 2cm long, it moves like a caterpillar. It has no featuers, with a little black dot on its back side. I would appreciate anyones help to identify my new 'pet' and what do i do with it? Thank you, Jan and Robyn

We found this unknown grub thing. It is about 2cm long, it moves like a caterpillar. It has no featuers, with a little black dot on its back side. I would appreciate anyones help to identify my new 'pet' and what do i do with it? Thank you, Jan and Robyn