AH BLESS,size of them feet looks like your going to have a big boy on your hands,we adopted a white gsd about 11 years ago(wadar,s worthing and district animal rescue) when my eldest was 18mths old and bless her shes still going strong( ;) fingers crossed)we were told she was approx the same age as my boy,my dog had 3 past owners in her first 18mths and touch wood she has been a complete diamond with my 3 boys,would defo adopt again when the time comes.leave a light on for him and maybe a radio so he feels hes not alone?