Translation:An octopus has many legs
The indefinite article is needed before the noun "octopus".
Yep, report it.
An octopus has many legs should be correct too
Ha, ha, ha, if you give the article Duolingo treats it as incorrect ! =D Well that I have sense of humor.
"Good that I have a sense of humour" is correct.
An octopus has arms, not legs, even in Swahili!
please include the definite or indefinite article!