Nahla is a 6 Year 9 Month old Female Labrador Retriever, who was first referred for management of hock OCD and Elbow Dysplasia and since starting treatment struggled to maintain a healthy weight while we were helping to improve her mobility.
Nahla’s owners initially wanted to try and manage her weight loss on her current diet, which was Hills JD, as they had seen a difference in her mobility since feeding her this. Unfortunately, in my experience (and in Nahla’s case), it can be difficult to achieve weight loss with JD and we often advise switching to a lower calorie diet and instead adding in a mobility supplement, as long term the weight gain will be more detrimental. 

At her heaviest Nahla weighed 29.8kg, with a target weight of ~25kg, and at this point we were able to set up an online portal, obtain a full nutrition questionnaire from her owners and then provide advice on switching her diet, the right feeding volume to use and how to introduce healthier treat options to her current feeding regime (carrot, apple, ice cubes, kibble from daily allowance etc).
It helps for us to understand how daily treats (the classic being a Dentastix) can hinder weight loss and lead to weight gain in patients that struggle with this. Swapping in healthier treat options means that they don’t have to stop the behaviour, just change what they are being given, and this helps with long term compliance.
Following making these simple changes, Nahla started to successfully lose weight (at one point we even had to increase her feeding volume as she had surpassed her goal weight), and even surpassed her target weight of 25kg, which made a big difference to her overall mobility and response to treatment. 
Nahla is a complex case, and sadly has had a lot of set backs with her health and mobility over the last few years, so her weight is something that continues to need careful management alongside her treatment, especially when exercise is restricted/limited. The above changes have helped form a foundation for this moving forward, which is a big help. Keep up the good work Nahla!