When Lindsay greets Justine and Pizza (the wheelchair-bound Corgi) outside of the apartment, Pizza is referred to by Justine with female pronouns. In the closing scene where Shonzi meets Justine and Pizza on the street, Pizza is referred to by Justine with male pronouns. Presumably, this error occurred because two dog actors were used for the role of pizza (Chaz The Corgi and Lolita The Corgi).
At 30:28, it is visible that there is cotton in place of a needle in the IV set.