"The dogs drink water."
Translation:Οι σκύλοι πίνουν νερό.
i think it's a gender problem, dog has a masculine "Οι + ..... οι" whereas neuter has "Τα + .....α" . (go to duolingo's written page on plurals or the whole part on NOUNS here : https://en.wikipedia.org/wiki/Modern_Greek_grammar#Nouns )
Is it possible to add the articles on this link ?