Sentence:  Apparently , however , Miller has relied heavily on the anatomy in <WSD>dogs</WSD> and cats , and he has been criticized for using pathologic human material in his normal study ( Loosli , ' 38 ) . 
Meaning of the word marked with <WSD> tags:  a member of the genus Canis (probably descended from the common wolf) that has been domesticated by man since prehistoric times; occurs in many breeds