Keeping weight on very active Jack
I have a 2 1/2 year old Jack that is very active... out all day chasing squirrels and anything else that moves. She's not an eat at one time kind of eater, but rather has a full bowl of Benneful that she eats throughout the day. She's healthy, but skinny. Can't seem to keep weight on her. I'm pretty sure it's activity related since in the winter, she gets heavier. Anything I can add to her diet that will help?