The puppy who couldn't sleep

When Lara and her dad discover a scared black puppy in an alleyway while walking their dog Oliver, Lara desperately wants to take him home and look after him. Her dad isn't so sure. Lara can't stop thinking about the poor puppy and soon goes to find him again. She convinces her dad to let him stay and names him Jet. But when Jet spends all night howling, Lara's dad isn't impressed. Night after night, the wailing continues, until it begins to look like Jet may need to go to the animal shelter. Is there anything Lara can do to help Jet sleep?