Diseases. All the animals are sick.... and I'm sick :(

The dog has got a headache.

The snake has a neck ache.

Ouch, ouch, ouch, I've got a tummy ache.

Ouch, ouch, ouch, I've got a head ache.

Ouch, ouch, ouch, I've got an ear ache.

I've got a chicken pox.

Ouch, ouch, ouch, I've got a tooth ache.

Ouch, ouch, ouch, I've got a back ache.