(Meredith) -- A heartwarming video of a baby chimp laughing for the first time at the Maryland Zoo is going viral.
The video shows a staff member gently tickling the chimpanzee, named Maisie, who then lets out a faint giggle while beaming from ear to ear.
The zoo posted the footage to Facebook on Nov. 14, where it racked up more than 600,000 views within a few days. The video was recorded on Nov. 3 when Maisie was just under 10 weeks old.
"Making a play face and laughing is a natural chimp behavior and a milestone chimp babies typically reach between 12 to 16 weeks," the post reads.
Maisie was born at the Oklahoma City Zoo on Aug. 28, but her mother could not care for her properly.
In late September, the baby chimp moved to the Maryland Zoo, where a team of animal care specialists has worked around the clock to provide her with constant care.
The zoo will eventually pair her with a surrogate chimp mother.
Thousands of animal lovers have followed Maisie's journey and even helped the zoo name her in a public poll that closed earlier this month.