In the 1970s, Dr. Francine "Penny" Patterson, a renowned animal psychologist, began working with Koko, a western lowland gorilla, at the San Francisco Zoo. Dr. Patterson's goal was to teach Koko American Sign Language (ASL) to understand the gorilla's cognitive abilities and behavior.

to check if your pet is at an ideal weight. Obesity affects nearly half of companion animals and significantly reduces their mobility. Call to Action (CTA)

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