Take a look at the sentence again:
Bonkers, our ninety pound golden retriever, chews on furniture, __________,
and snots up the car windows—inconveniences we didn't anticipate when we
adopted him.
The blank needs to begin with a simple present tense verb. You chose he drags us around the neighborhood during walks, which is an entire main clause and thus causes a parallelism error. Before you continue, review the rules for parallel structure.
Go back to the sentence to try again.