Final answer:
During the neonatal stage, puppies cannot see or hear, but their other senses such as touch and taste are functional. Their eyes and ears begin to open and develop within the first two weeks, allowing them to see and hear.
Step-by-step explanation:
During the neonatal stage, puppies are born with their eyes and ears sealed shut. This means that initially, they cannot see or hear. However, their other senses such as touch and taste are functional. Within the first two weeks, their eyes and ears begin to open and develop, allowing them to see and hear the world around them.
During this stage, puppies are highly dependent on their mother for survival. They rely on her for nourishment and protection. As they continue to grow and develop, their senses will become more refined, and they will start to explore their environment.
It is important to note that the specific timeline of development may vary slightly for each individual puppy, but the general pattern of sensory development holds true for most.