Animals do not possess self-awareness or a concept of "sounding terrible" in the same way humans do. When animals vocalize, such as singing or producing sounds for communication or mating purposes, they are primarily driven by instinct and natural behaviors rather than a concern for their own vocal quality.
Different species of animals have unique vocalizations that are specific to their species and serve various purposes, such as attracting mates, establishing territory, warning others, or communicating within their social groups. The quality or pleasantness of their vocalizations is subjective from a human perspective.
While some animals produce sounds that humans might consider melodic or pleasing, others may create vocalizations that sound harsh, loud, or dissonant to us. However, these sounds are typically well-suited for their specific needs and serve their biological functions effectively within their natural environments.
It's important to remember that animals have different sensory perceptions, auditory systems, and communication mechanisms compared to humans. What might be unpleasant to our ears may serve a vital purpose for the animals themselves, allowing them to effectively communicate and interact with their own species.
So, animals do not possess the self-reflective ability to judge or be aware of whether they sound "terrible" or not when they vocalize. Their vocalizations are a product of their instincts, biology, and evolutionary adaptations, rather than a concern for aesthetic appeal.