Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: I can't have a dog in my flat! Literally no reason either! Sorry potential doggie! #landlords #doglover #sad #angry #rescuedog #dog ;_;
This tweet contains emotions: 
anger, disgust, sadness