Question: what is the longest tape worm you have ever seen

Marisol Collins answered on 8 Nov 2016:

Great question, Logan! The longest tapeworm I have ever seen was around 30cm long – about the same length as a school ruler! It was actually a cow tapeworm, but it came from a dog that had eaten raw beef, so the worm was living in the dog instead! The dog was alright, but the worm was pretty gross!
The tapeworm I saw was small compared to some others though, and the longest one came from a human – it was over 25 metres long!!