Translation:The animals are beautiful, we are watching them.
Well, the main function of the copula is to mark the separation between subject and predicate. In a sentence of the type "the noun is adjective", this becomes clear without a copula, because the adjective יָפוֹת has no definite article, but הַחַיּוֹת is determined, as opposed to הַחַיּוֹת הַיָּפוֹת the beautiful animals.
That chart is just a guideline. It doesn't show all forms. Basically all of the prepositions are irregular in one way or another. If you want to check the full conjugation, not just for this preposition, but all others, use this site:
(It also lists most, if not all, other words that appear in this course, together with their pronunciation, their gender, conjugations etc. If you are not familiar with it, make it one of your bookmarked websites. It's a life saver!)