animals with horns

[quizling]

Can anyone tell me what is the only animal with retractable horns please.  Possibly an insect but I think there is one that is an actual animal.

[liljoolz]

do snails and slugs count? they can retract their 'horns'.

[woofgang]

well they are gastropods, so not insects, not sure if they count as animals

[bernardo]

Of course slugs and snails are animals.  You don't need to be an insect or have legs or anything to be an animal; you just have to be an animal (rather than a plant, fungus, bacterium, etc.).  Snail sounds like the best answer so far to the original question.

[amarillis]

There is a caterpillar called the gold rim swallowtail caterpillar that has retractable horns

http://cityguide.news-press.com/fe/Recreation/Stories/020628_SWFLCritters2.asp

 

[montyy]

snails and slugs dont have horns