Possible Clues:

• Cow perhaps having drink at home with insect
• Drink at home with insect or sheep?
• Harry Truman taking on board current thinking
• Cow or giraffe, e.g.
• Contemplative being in a field?
• Cow, e.g
• One chews the cud
• Mammal whose stomach is divided into four compartments
• What gets insect drunk, like sheep, perhaps?
• Popular worker sat on by strange sort of animal