Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: Asian Tiger #Mosquitoes are so relentless. More aggressive than the kind I dealt w/as a kid.
This tweet contains emotions: 
anger