Any dog is easily defeated with a $5 steak and a bowl of antifreeze!
... not so sure !
20 years ago - I had a lot of friends who "show" dogs- they were all really worried about someone doing exactly this in an effort to make the dog lose ( didn't really ask at the time , I assumed sedative/laxative etc )
I did lose a wonderful dog a long time ago who ate a fox bait that he found

in a local park - I knew the council was baiting but my dog got out from the yard... this was before i understood dog training , we were both too young..
I have since then always trained my dogs to wait for an "eat" command. Sounds mean , but I also had toddlers at the time...
-my dogs would never grab an item of food left on say the dinner table/coffee table/floor WITHOUT permission ( way diferent from my next door neighbour who thought it was funny when her dog grabbed the hamburger right out of my hand...

)
One story I have is when I was preparing the evening meal for my 2 dogs, I then get them to sit.... then all hell broke loose my (at the time) 4 year old had fallen and badly gashed his chin. Mate I literally drove away to the hospital with my son , left all the doors wide open and didn't give a sh!t at the time. Long story short- was seen pretty quick in A&E , but still got home 3 hours later. I still feel AWEFUL about this , but both dogs were STILL sitting in front of their dinner bowls , around a gallon of drool on the porch but they hadn't even touched their food... mate a good dog is hard to find but these were the best I've ever had as part of my pack.
I'm pretty sure that this is probably basic dog training 101 for any pro guard-dog ?
So , I am pretty confident my dogs, and any half-serious guard dog, would
not eat that juicy steak....
** edit : blame Hollywood, of course you get by any guard dog with a steak or maybe just throw a tennis ball or give them a tummy rub or look them in the eye and some sort of Ninja freak them out with your brain stuff- in real life you would have to shoot them . Not good for a G rating on your movie....