**********WHY WOULD HE GRUNT LOUDLY WHEN I HUG HIM? BEST REWARDED*****************? (very short)?

he's usually quiet when i hug him but this time he grunted kinda loud & moaned...idk it's like the sound when people hug & say "ahhhh or uhhhh" loudly (sounded manly) idk how to explain the moment but it seemed like his arms were criss-crossed in front of me not around me & slightly pushed me away...i didn't get a good vibe from him this time....did he not like it? what happened? i know i didn't hurt him but he was making the sound that someone would make when they hug tight but his hug was pretty flimsy & loose