That appears to be a normal Baird's rat snake. I used to keep a family of them for many years...some have yellow between the scales as yours does, & some
have orange (as most of mine did) between the scales. They are ALL wonderful pets, IMO...they tend to be very docile & easily handled. Mine lived as long as
26 years, & the largest (males) ended up being 6-7' in length. Thanks for sharing your photos, makes me miss the ones I had (but I still keep a number of other
wonderful rat snakes too). Incidentally, they love branches in their cage.
Unless something has changed in recent years, they are not considered to be "morphs"- there is & always has been a lot of variation that occurs naturally
in Baird's rat snakes: some can be dark gray in color too, as opposed to lighter shades, & some have quite a lot of yellow & orange between their scales,
while others have very little.
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