Once its had all jabs get it out with expeirenced dogs and just keep it on lead , pups learn best by watching what other dogs do so just let it watch for the first few trips and once its got all 2nd teeth introduce it to rats , how will you catch the rabbits the dog bolts ? If you are using lurchers id encourage the pup to use its voice as much as possible , start with a live rat in a trap and get pup all fired up untill it starts to yap then reward it with treat this is something you can do as soon as its jabbed . Then get a fresh rabbit skin and let pup rag it , once it knows the smell hide