My 4 and 1/2 month old Bernese Mountain Dog has been getting bloodshot eyes for the last month. Mostly in the evening. My vet said to make sure I was giving her a large breed puppy food and to give her some calcium pills but this hasn't been helping. They don't seem to bother her but she is tiered a lot, but then she is growing too. My vet wasn't to concerned but I keep wondering if I should be.