My dog seems depressed. Is there any medication I can give it to make it happier?

We recommend to start with a video call with one of our vets. Often there are physical ailments/diseases that make dogs seem depressed. If the dog is physically fine you can try using Adaptil diffusers. Exercise is something dogs also love, so taking it outside and teaching it new tricks with the help of treats can be a good idea. You can always seek advice and tips from a good dog trainer or ethologist.