precocial: capable of independent activities from birth (see the following example)
Example: The use of the pig in neuroscience research is gaining popularity because pigs are anatomically similar to humans and many of their organ systems grow and develop similarly as well. Pigs are also precocial, meaning they are born with well-developed sensory and motor systems. This allows them to be very mobile and weaned at an early age. [Reference: Science Daily, (June 28, 2010)]
