Human teeth...

You're overestimating the power of most human jaws/teeth. There are few people that can bite off a persons finger with ease let alone an entire arm. In the show the undead zombies are seen ripping apart an entire rib cage with their teeth and even ''bare hands'' with ease to feast on organs. This is the silliest thing. They might as well used zombie ''lions'' instead of undead humans then it would be more realistic HAHA.

Lol yeah you can't really start bringing in realistic logic about the Walkers.

If you wanna say that then you might as well say the dead can't walk around cause their muscles in their legs are rotted and they can't see or smell cause their nose and eyes are rotted. Nothing about the Walkers are meant to be realistic...

What does that have to do with anything?
If they arise from the dead.....they still have the same members and organs. They didn't develop a super sense of smell or super steal teeth with jaws that open twice as far. They still have the same jaws and teeth that humans are born with.

I guess decomposition doesn't mean much to you. The teeth and jaw bone would be rotting and weakening regardless.

"Such as the magical possibility of germ warfare using walker innards."
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It doesn't even matter if it's actually a possibility or not. In the story, the characters THINK it may work. Hell, they could be wrong. But the IDEA....is a decent assumption. Remember, the characters know less about this epidemic than we the observers do. And....I'm sure they have had some bad experiences with walker exposure and sickness. They ranch walkers like cattle, and I'm sure some people have gotten sick from it (like Gabriel). So, if they make an (assumption) that exposure to walker guts (could) be bad for you, I can understand why they'd think that. They may very well be wrong. It's certainly not an issue that ruins the story for me.

Biting through the human rib cage would definitely break off their teeth LOL

The reason we have a pain response that deters us from biting that hard and persistently is because our teeth would fall out if we continued. Yet somehow the teeth of zombie as depicted in this show are anchored with a bond stronger than the often mushy skull they are attached to.

Biting through skin can be done, but it's not easy. This is aside from the fact that many fabrics - even lightweight fabrics - can be bite-proof from human teeth, yet are not used on this show.

It's so baffling that we don't see them wearing denim sleeves or kevlar mesh or ballistic nylon or even leather to protect themselves from bites and other injuries.

I hate you.