Well, actually I got all my questions answered. But the tips and notes are very important. Its like the lesson that I study then I practice by answering the exercises. So, it just disconnected me when I didn't find them and was answering kind of blindly. I hope it will be available soon. I think the link you offered will help.
Thanks a lot for all the effort.
Because it is in plural. duże is also one of the plural forms
And pies is not "personal"- so in plural it is in the not masculine personal group, together with all other masculine not personal nouns, feminine nouns, and neuter words.
Adjective have the same nominative singular neuter=nominative plural not masculine personal, so
duże dziecko- duże dzieci ( big child- children - neuter)
duży pies- duże psy( big dog- dogs- masculine not personal)
duża dziewczynka- duże dziewczynki (big (little) girl- big (little) girls- feminine)
duży chłopiec- duzi chłopcy ( big boy- big boys masculine personal )
I found this answering to my question why 'duże' and not 'duży':
pies is definitely an animate object
In Polish there are three types of masculine nouns (rzeczowniki zywotne).This is the full list of genders, along with the subtypes in Polish:
Masculine - Masculine personal, example: chlopiec (meski osobowy) - Masculine animate, example: pies (meski zywotny) - Masculine inanimate, example: dom (meski niezywotny) Feminine, example: studentka Neutral, example: krzeslo
All masculine personals are also animate, but not all masculine animate are personal. - Masculine personal, example: chlopiec (meski osobowy) - Masculine animate, example: pies (meski zywotny) - Masculine inanimate, example: dom (meski niezywotny) Feminine, example: studentka Neutral, example: krzeslo
Personal masc nouns = only male humans
Male humans have special endings that differ from normal animate nouns (non-human).
so a dog in conclusion is animate but not personal masculine.