If a familiar is nearly as smart as a human (or smarter than the average human, depending on the master's level), and many of them have a high Dexterity score, and familiars inherit all of the master's skills, can it be inferred that a familiar for whom it is physically possible to hold an object (for instance a hawk) can also use a weapon? If that's too much of a stretch, can it be given something like holy water or an acid bottle to drop or throw on the enemy?
What about a familiar that can obviously use a weapon (such as the Imp, which is stated as generally attacking with a shortsword)? What are its weapon proficiencies? Does it gain the same weapon proficiencies as its master? (Arguably not much for a Wizard, but already quite a few weapons if we're talking about a Sorcerer.)