Towards is the preposition.
Over.
Boys
No. A verb is something you do i.e. I jumped. Where jumped is the verb. A preposition links nouns pronouns and phrases to the sentence i.e. I jumped on the table. "On" would be the preposition. Something to help you with prepositions is saying the sentence. The squirrel went ______ the tree. You can use beneath, around, above, etc. and all would be a preposition.
joy
No, "jumped" is not a preposition. It is a verb that describes the action of leaping off the ground.
The word "down" can function as a preposition when it is used to indicate movement or location towards a lower position or level. For example, in the sentence "He walked down the stairs," "down" is a preposition indicating the direction of movement towards a lower position.
The cat jumped across the table to catch the mouse.
Yes, "down" can function as a preposition when it shows location or direction in relation to a noun. For example, "The cat climbed down the tree."
The valiant knight jumped on his horse and charged towards the fire-breathing dragon.
"Squiggly jumped out of the buggy." However, do not EVER say "The peanut butter is inside of the pantry." Did you need the of? No. The sentence sounds better when you say "The peanut butter is inside the pantry." In the sentence "Squiggly jumped out of the buggy." you have no choice to you of. You cannot take it out. You can only replace it with a preposition such as from.
The preposition is "over" and the phrase "over the tree" is an adverbial phrase telling where the rabbit jumped. (unless the tree has fallen to the ground, that is quite a leap)
Puppy is the subject. Feet is the object of a preposition that is modifying how the puppy jumped. One is an adjective of puppy.