Thank you for your response.
I think that baby is a pit-bull, I think
she or he will look like this when grown up

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If you love your dog, you will receive back nothing but love. That's true.. When I first saw my brother's amstaff I thought he was very cute while he was still a puppy. But when he got bigger... I thought like - OMG - this dog IS scarry, what if smth gets into him and he bites me with those crocodile looking jaws.... but you know all those fears vanished as soon as I saw Dan in action. What a kid! That "monster" was chasing his tail, singing along with the radio,
racing, jumping - and his eyes were sparkling with happiness. Ohhh I felt such a shame to think bad of him. Sorry, Dan !