lèi
class
Simplified form of 類. Phonosemantic compound. 犬 represents the meaning and 頪 represents the sound.
Components
大 Simplified component
dà, dài
big
Shorthand for 犬, the meaning component in the traditional character 頪.
Evolution

Seal script
Shuowen (~100 AD)
Clerical script
Western Jin dynasty (266-316 AD)Traditional script
ModernSimplified script
ModernDefinitions
Sources