Answer: wir lieben unsere Katze (we love our cat)
Explanation: next time try to conjugate the word "lieben" (to love) like this:
Lieben
Ich liebe = I love
Du liebst = You love
Er/Sie/Es liebt = He/She/It loves
Wir lieben = We love
Ihr liebt = You love (plural)
Sie lieben = They love
The easiest way to do tasks like this is just to conjugate the verbs in that case Wir (we) was the keyword.