Teaching your dog to drop things, or to leave it, is the most effective way of getting them to let go of anything they’re not supposed to have. Teaching your dog to “drop it” is much more effective than chasing them or trying to take things off them by hand. Chasing a dog who has something in their mouth will turn this into a fun game and they will learn to run away from you instead. You can teach your dog to “drop it” using a portion of their food or some of their toys, depending on what motivates your dog the most. If your dog doesn’t drop the toy, don’t try and take it from them, instead, stay calm and try to distract your dog with food instead.
Some dogs may prefer toys to food and therefore are unlikely to drop them in exchange for a food reward, if this is the case with your dog, you will need to trade one toy for another. This is a great exercise for dogs who like to run away with toys, your dog will eventually learn that without you, the toy’s much less fun, so will be more likely to bring them back. Once your dog is consistently dropping the first toy when you show them the second one, you can introduce your cue word, “drop”, to start, practice as before, and say “drop” as your dog lets go of the toy. Keep doing this, and when your dog is immediately letting go of the toy when they hear the word “drop” you can move on to asking them to simply “drop” the first toy without using a second one.