Plants should be matched to a container of the right size to ensure that water is distributed efficiently. Plants in containers that are too small can become “root bound,” meaning the roots take up all the space. Plants in containers that are too big may not hold water in the soil and so will become dried out.  If you check the roots and you can tell there is more root than soil, this is a good indication that it’s time to get a bigger pot. You only want to move plants up one pot size at a time so you don’t end up with too much extra room. If the leaves of the plant seem disproportionate in size to the bottom, you should move up a pot size. If the pot has ever tipped over because of being top heavy, this is a definite indication you need a bigger pot. As with many aspects of tending indoor plants, there is no hard and fast rule that always applies. You need to occasionally take stock of your plant and judge if you feel a bigger pot would benefit it. Since overwatering is often what kills plants, pots that allow plants to drain are very important. These pots will either have a hole in the center of the bottom or may have some kind of thin slits on the bottom. Pots with a solid bottom can cause water to pool and the roots can rot if soaked for too long.  If pots without drainage holes are your only option, it works well to put a layer of stones at the bottom of the pot. Extra water can pool there and won’t be in direct contact with the soil and roots. The stone layer should be an inch or so deep. Be extra careful not to overwater your plants. If you can only find plastic pots without holes, you can drill your own holes into the bottom. If your pot is going to drain water, you most definitely don’t want it draining out onto your floors. You can purchase plastic pans specifically for this, or you can improvise and use a plate or saucer. You could even cut up a milk jug or 2 liter bottle if the pot is small enough and you aren’t overly concerned with the appearance of it. Always empty this drainage pan within a half hour or so after watering, rather than allowing the plant to sit in it. If you don’t drain the pan, it’s basically the same as having a pot with no holes, as the plant will still be soaking in too much water. If you have had a plant for a while and you can tell it is growing bigger, it may be best to replant it in a bigger pot. If the soil of the plant has shrunk away from the edges, it may need a smaller pot. To check if a plant has become root bound, you can carefully pull it out of the pot and check if there is still plenty of soil or if it seems to be mostly roots.
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One-sentence summary -- Pot plants in properly sized containers. Place plants in a pot with drainage holes. Place a drainage pan under the pot. Repot when necessary.

Article: Playing dead involves your dog lying down. Before he can learn this trick, he should be comfortable with the command to lie down. Preferably, this area should also be quiet so that your dog does not become easily distracted. If your dog does not already know this command, teach him by holding a treat high in the air with your hand. As he is looking up at the treat, push on his back end until he sits; firmly say the word 'sit' as you are doing this.  Once he is seated, reward him with the treat by bringing the treat to him instead of allowing him to jump up to get the treat. Firmly tell him 'No' if he jumps up.  Practice this several times a day for few days until he can sit without you pushing on his back end. Each practice session should last about 10-15 minutes.  Continue to give him treats as positive reinforcement each time that he sits. Hold a treat in front of his nose, but do not allow him to eat it. Instead, slowly move the treat down to the ground while still holding it in front of his nose.  Say the verbal cue 'down' as you are moving the treat to the ground so that your dog associates the verbal cue with the action of lying down.  Your dog should be lying down by the time you move the treat down to the ground.  If he gets back up, continue practicing until he lies down each time you move the treat down to the ground.  Reward with him a treat when he lies down without quickly getting back up. Hold your hand in front of your dog’s nose as if you had the treat, but do not have a treat in your hand.  Use the same hand motion as if you had the treat to get your dog to lie down.   Once again, reward him with a treat when he reliably lies down without quickly getting back up. You will need to practice this command with your dog several times a day for at least a few days.  Each practice session should last about 10-15 minutes. If you want to challenge your dog, you can gradually decrease the visual cue until he learns how to respond to only your verbal cue to lie down.
Question: What is a summary of what this article is about?
Teach your dog the ‘down’ command before teaching him how to play dead. Choose a comfortable area to train your dog. Command your dog to sit. Stand directly in front of your dog while he is seated. Guide your dog to lie down without a treat. Continue practicing until your dog learns how to lie down at your command.