What is it and should it have those lumps on it's back ?

[Cromm]

As title says really.


Thank you.

 

[JonathanD]

That looks to me like the caterpillar of the Vapourer moth.

 

[Cromm]

Outstanding. Thank you.

 

[JonathanD]

And those tufts are normal for those caterpillars and come in varying colours. Amazing looking things.

 

[Mesquite]

And those tufts are normal for those caterpillars and come in varying colours. Amazing looking things.

The punk hairdo of the caterpillar world

 

[Harvestman]

That looks to me like the caterpillar of the Vapourer moth.

Quite right sir. Saved me the bother. Thank you.