Chaser (dog)
Chaser was a Border Collie with the largest tested memory of any non-human animal. Chaser worked with Professor John W. Pilley, at his home in Spartanburg, South Carolina, from eight weeks old, until Pilley's death in June 2018. Pilley spent that time training her in a formal research project. Chaser could identify and retrieve 1,022 toys by name.
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