a DIAGRAM would be the best option as he can explain each animals food habits. (An image can also be used if he doesn't want to explain, but diagram is better)
DIAGRAM
Number seven means that you are very busy.
Number 8 means something is very clean or clear
The verb is "trudged".
It's the past simple form of the verb "to trudge" which is a type of a walk, usually slow and heavy as if you have weights on yourself.