References
- 1VCA Hospitals：Why do cats stare at nothing?
vcahospitals.com
- 2Royal Canin Foundation：Cats have an exceptional sense of hearing
royalcaninfoundation.org
- 3
- 4Cornell Feline Health Center：Cognitive Dysfunction
vet.cornell.edu
- 5PetMD：Dementia in Cats
petmd.com
- 6
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