the common saying is that cats are introverts and dogs are extroverts: cats show love by magically always being in the same room as you (including the toilet), dogs show affection by screaming “I LOVE YOU I LOVE YOU I LOVE YOU” repeatedly until you go deaf all the while jumping off the walls because they’re just so excited that you still exist.
there are different kinds of bites, if it doesn’t really hurt then it’s probably just an “i love you but stop it.” bite or them being playful, if they want to hurt you they’ll make it very clear.