My family and I have just returned from holiday. My 6 year old beagle has stayed with my friend and when returned when have come to find that he has gained a lot of weight (nearly doubled) in the space of two weeks. You can no longer see his ribs and it is clear he isn’t breathing as well as he used to. What are the dangers of gaining a lot of weight in a short space of time and what is the best way to help him lose weight? Your help will be very much appreciated.