hognose/cobra

[Lrptls]

my hognose has only ever shown agression to me 3 times in the 3 years i'v owned him. he bit me out of anger once, was just a quick tiny bite, no fangs. once he got sick, something was wrong with his nose but while waiting for the day to take him to the vet he was quite agresive...when i came in the herp room he would start hissing and hiss the whole time. the ride to the vet was crazy too, he hissed the entire time and constatly struck at the sides of the containor.
then there was last night, i had to put water in his bowl and his neck flattend. i started opening the cage and he started hissing, he even stood up with his hood hissing, it was adorable. he did strike at me but i think it was with mouth closed.
later that night i took my camera out in the room, i was hoping to get a shot of him with him all cobra like if he was still in that mood. i usually have to dig through his sand for about 5 minutes to find him, once i did he was his usual sweet self, i pickd him up and he didn't care.
does any one have crazy hogs like mine?