I thought that the plural cats called for an 'en' on 'Unser'?
Katzen is plural, hence a 'die' word. So, in accusative, it will be Unsere.
Katzen is nominative plural. Shouldn't it be "weißen" then?
No, declension only applies to attributive adjectives in German. Here, "weiß" is used predicatively.
Nicht has to be in the end of the sentence .. why is it not like that?
Always before predicatives
http://is.gd/EZo9IV
why unsere and not unser?
unsere goes before feminine words and plurals, while unser goes before neuter and masculine words
I have the exact same answer and it keeps saying its wrong
Correct answer