Describe the spider
One body, eight legs, eight eyes and One head
Describe the witch
One body, two arms, two legs, one head, two eyes, one nose, one mouth...
Describe the skeleton
One body, two legs, two arms, one head...
Describe the ghast
One body, nine legs, two eyes and one mouth
Describe the ender dragon
One body, two arms, two legs, one head. (And two wings too)
Describe the elder guardian
One body and one eye ( spikes and tail too )
Describe the wither
Three heads, one body
Describe the creeper
One body, one head, four feet
Describe the slime
One head, two eyes and one mouth.
Describe the Magma cube
One head and two eyes
Describe the zombie
One body, two arms, two legs, one head...