The YT 28 formula should be fine for your Jack Russell as well- breed specific formulas is pretty must marketing. The "Mini Adult 27" formula (appropriate for Jack Russell Terrier) is comparable.
I fed RC puppy 33 when I first got my pup bc that's what she was eating. I changed to grain-free kibble (EVO, Horizon Legacy, Instinct, CORE) and have great results- but she isn't too picky when it comes to kibble. |