Oh .... the cat WILL attack , ONE DAY .
It only takes a moment , cats are sneeky , and you can bet it's stalking the hatchling in it's viv when ever you are out of sight , you can bet your house on that.
Cats also get jealous too and will attack other pets out of malice.
Consider yourself warned.
Absolutely correct Knobbys, and if I'm being honest, the way people just ignore what they've been told will eventually happen without a doubt, and just allow their cats to not only be in the same room as their bearded dragon's enclosure, but they actually allow multiple cats to hang out around the beardie's enclosure, on top of the beardie's enclosure, etc. is both frustrating and saddening. How many people have to tell you that just the appearance of a cat can cause your bearded dragon tremendous stress before you take this seriously? You have absolutely no idea what your bearded dragon is thinking or feeling, and when he suddenly stops eating, becomes lethargic, starts losing weight, etc. you'll then be wondering what's wrong with him and thinking he's "sick", when if fact he's just been horribly stressed by multiple cats hanging out around his enclosure day and night.
They're your pets and obviously we can't force you to heed our warnings, but I would ask you to go to the main forum page, go to the search bar, and just search "cat". Maybe reading the hundreds of posts from people who had been keeping their cats and their dragon together in the same room for months and months or even years without an issue, and suddenly their dragon just stopped eating, etc. will wake you up...or how about the hundreds of posts where someone had been keeping their cat and their beardie separate for months or years, even in separate rooms with a latching door that the cat was never allowed in, so they were doing everything that you should be doing, and even after doing this for years with no problem suddenly one day the cat got into the room somehow, or the beardie ran out of the room somehow, it happens every day, and they finally found their beardie hiding under the couch or in the back of a closet after a week of it being missing, beaten and tortured and bloody, missing feet, legs, arms, it's entire tail, with gaping wounds exposing internal organs, bite marks the entire way through their skull into their mouth, missing eyes, you name it...and a lot of these injuries on one beardie...maybe viewing the hundreds of photos that we view almost every day of permanently handicapped or suffering, dying, or dead bearded dragons that were stalked, tortured, literally ripped apart, or killed by their loving cat or cats will wake you up and finally convince you to do the safe, responsible thing for your bearded dragon, which is keeping his enclosure in a room with a latching door that is 100% off limits to any of your multiple cats...please also read the dozens and dozens if not hundreds of stories from people who had an enclosure with "a locking lid" or "locking, latching doors"...
The bottom line is that you might go on for days, weeks, months, or even years the way you are, not having a clue how your beardie is being effected by your cats being around his enclosure and in plain sight all the time, but with no "physical attacks" so you'll think everything is fine and we're crazy...then one day something happens, like the girl who posted just this week where her only cat, who was kept separate, somehow got a hold of her beardie while she was cleaning it's enclosure, something she had done multiple times without issue...and I guarantee it will happen to you because you arrogantly keep multiple cats in the same room as your bearded dragon.
It's such a simple thing to do, keeping the dragon in a room with a latching door that is off limits to your cats. It removes 99% of the risk you create by having a beardie and a cat or cats in the first place. So why not just do it and ensure the life of your dragon? It makes no sense to me at all, as it seems like simple common sense to do it...as Knobbys already said, you've been warned...