I also shall add
I also wanted to add that getting a jungle onto rats may be harder than you think, my old jungle when he was till a hatchy i transfered him from mice to rats asap. They are just overall better for the snake. Now what you may have to do fr a few feeds is scent the rats with a defrosted mouse. Or even brain the rats. (basically puncturing their brain to make the scent more enticing for a snake). Both of these alone didnt work for my jungle however so i strategically held the mouse above the rat with feeding tongs/tweezers. When he struck at them I qucikly moved the mouse out of the way so he would grab the rat instead. Wastes a bit of money but in the long run its better, you could also feed the mouse as well, but its better to keep him on rats once he starts eating them. May take a while, patience and practice. Don't worry hell get there eventually. It is annoying and upsetting when he wont take it so don't expect any better for at least a few weeks, but with persistence he should take the rats eventually. He will also grow quicker, shed more and not look as hungry. xD