| -: Definition :- | |
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| Study of dogs | Cynology | 
| Study of cat | Feniology | 
| Study of horses | Hippology | 
| Study of snakes | Serpentology | 
| Study of skin/ skin diseases | Dermatology | 
| Study of wine | Enology | 
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| Study of liver | Hepatology | 
| Study of kidneys and their diseases | Nephrology | 
| Study of nerve | Neurology | 
| Study of cancer | Oncology | 
| Study of eyes | Opthalmology | 
| Study of bones | Osteology | 
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| Study of eggs | Oology | 
| Study of mountain and their mapping | Orology | 
| Study of rocks | Petrology | 
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| Study of hand writing to analyze character of the writer | Graphology | 
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