For your young veiled, you will need a 18x18x 36 or there abouts.
A 12'' cube is too small even for babies a week old!!
Veileds are used to Yemen climate and are much easier to keep hydrated then montaines or even panthers.
Did you read the care sheet for veiled, David should pop up any moment to give U the link which he always seems to have handy.
With this size cage, you will not heed to upgrade him until he is about 8 months old.
Adult male veiled (like montaines) need room to move about, and they will do much better if you are able to let them out of the cage to roam about free range.
Chams do not fair well if couped up and confined to the limits of a cage.
Weather permitting, they also should be taken out doors for real sunshine.
PS. Please feel free to PM me anytime if you would like a one on one communication
Oh, also don't forget to check out my taming blog
