"Our little dogs are great!"
Translation:Nos petits chiens sont géniaux !
Because its the pleural form since he has many puppies Singular= une idée génial! Pleural= des idée géniaux!
I think it's because 'petites' and 'chiennes' are feminine plural, but 'géniaux' is masculine plural. So either it's 'petits chiens géniaux', or 'petites chiennes géniales' :)