taitcaz

hi all, but i need help and advice



firstly hi everyone , im carron nd a newie, i recently rescued a great dane cross mastiff, he's about 3 yrs old neutered male , he seemed to settle in straight away went straight to his new bed rolled over it , he's very loving and great with me , but I knew taking a rescue dog on would need alot of patiance and understanding , which I know I able to do , I suffer with depression and have for years , I hardly went out doors , but i decided a dog would help me start to heal and come out of my self and it has , I sometimes thinks he understands me , when im a little down he gets up pushes his head in my chest and snuggles in , were out the house 4 times a day and its like i found a new lease of life, but he is very aggressive towards dogs , cats and what seems like a fear of lads and some men , in the last two days he snapped 3 times on one occasion it was my 13 nethew , adonis (my dog ) gives no warning he just launches at ppl i bought a muzzle for him to ware in the house as my step children are here till tomorrow and luckily for my step son he had the muzzle on when 3 hrs ago when my step son walk passed min he snapped again with no warning no growl ,, i dont want to loose adonis but i couldnt live with it if he hurt someone or a child , hes a very very large and powerful dog . PLEASE does anyone have some advice i really dont want to loose my new best friend, Im his only hope for a second chance , i went back to the rescue i know if they see this behavior they will have no choice but to put him to spleep

please can anyone one help me with this i dont no what else to do

carron x