I was wondering if anyone uses a life vest for their Mastiff. My friend who has one of Fenway's brothers told me that someone told her Mastiffs should wear life vests when in deeper water or they tend to having a hard time keeping head above water. Would like thoughts on this. Right now Fenway just has access to a kiddie pool but after he gets all of his vaccines we will take him to the dog park that has access to a lake. Thank you!