Depends on the pet. Dog yes. Dragon no.
For a sickle, would you take a book out of the library without checking it out?

Depends on what book!

For a Sickle would you sneak extra liquid luck into the worst quidditch players butterbeer?

No! That would be against the rules.
For a sickle, would you help a student in class even if the teacher said not to?

I would like to after class, but in front of the teacher, rules are rules
Harry's such a trouble maker Lol! Breaking the rules, "pouring" it into Ron's glass

For a sickle would you blurt the answers to your test out in class?

No. That way, eventually everyone would have to take another test and it would be more troublesome for both the students and the professor.

For a Sickle, would you vandalise a portrait at your common room?

Depends... if it's ugly yeah, I'd do a tiny cat face poking out from the corner, if it was beautiful, no I'd respect the art.


For a sickle, would you eat an entire container of peanut butter?

No.

For a Sickle, would you pickpocket a random person?

No

For a sickle would you steal someone's gloves or shoes, fill them with whipped cream, and put them back?

YASS

For a sickle would you lick moaning myrtle's toilet

Nooooo

For a sickle would you do someone else's homework?