You'll find this gear-shaped icon in the App Drawer, though on some Androids the Settings app resembles a purple box with switches on it. It's near the middle of the Settings menu.  On some Androids, you don't need to scroll down. If your Android uses Oreo 8.0, you'll tap Apps & Notifications instead. It's in the upper-right side of the screen. A drop-down menu will appear.  On a Samsung Galaxy, tap ⋮ instead.  Skip this step if you're using Oreo 8.0. This option is either in the drop-down menu (Nougat 7) or in the "Apps" menu (Oreo 8). It's near the bottom of the page. Doing so will open a list of apps that can be used for the home screen launcher. On a Samsung Galaxy, tap Home screen instead. Tap the launcher app that you want to use for your Android's home screen. Once you've done so, you can close the Settings app to view your new home screen launcher.

Summary: Open your Android's  Settings. Scroll down and tap Apps. Tap Settings . Tap Default apps. Tap Home app. Select your launcher.


The collie is a medium-sized dog that originated in Scotland, where they were used to herd sheep. Their heritage as working dogs means they have a lot of endurance and a lot of energy. This means that only giving a collie a quick walk around the block will leave a collie feeling bored and frustrated.  The ideal Collie owner is interested in an interactive relationship with their dog, training the pet to a high level of obedience, and participating in activities such as agility or obedience trials. A collie owner should be active and have the time to give their dog a lot of physical activity every single day. If a collie is not mentally stimulated and given a lot of physical activity it will become bored and neurotic. This could result in bad behavior, such as barking for no reason. Collies do make great family dogs but need to be treated with respect. If you have very small children, you may want to consider a different breed. If a small child is too rough and tumble with a collie, the animal may become fearful and bite out of fear. The Collie breed is prone to certain genetic health problems, especially hip dysplasia and eye problems. If getting your dog from a breeder, choose one that screens the parent dogs for these problems. Make sure the breeder breeds from dogs with low hip scores and that passed a screening eye test with a veterinary ophthalmologist.  The breeder should be able to produce certificates which prove both the mother and father were screened and are at low risk of passing on diseases such as CEA (Collie eye anomaly) and GPRA (generalized progressive retinal atrophy) which lead to blindness in young dogs. Screening an adult dog is not a guarantee the puppies will definitely be free of disease, but it is a good start. The other side of the coin is that parents that are affected by hip dysplasia or CEA are highly likely to breed pups that are also affected. Make sure they are socializing all of their dogs regularly. This will help assure that your puppy becomes a confident well-adjusted adult dog. The breeder should expose the dog to many different people and situations beginning around 3 - 4 weeks of age. The young dogs should meet people of different heights, appearances, and tones of voice.  The puppies should not be exclusively reared in a kennel, as this isolates them from the normal sights, sounds, and activities of a regular life. This will make it more difficult for the dog to adjust to family life. Never, ever buy a puppy from a puppy mill. One sign you have come across a bad breeder is that the breeder will not let you see the mother. This is because the mother has been taken away from the puppy far too early and is no longer interacting with the puppy at all.

Summary: Decide whether the collie personality is right for you. Decide if the collie breed is right for your family. Be aware of potential health problems. Choose your breeder carefully.


This is one of the simplest ways to get outside and enjoy nature. Go for a walk or a run in your neighborhood or on a nearby nature trail. Make sure you take in the nature you pass – trees, plants, and animals. If walking or running isn't quite your style, go for a bike ride instead. You can bike through your neighborhood, or even take your bike to a nearby nature trail. Either way, you'll get some exercise while you're enjoying being outside. Make sure you're wearing the correct protective gear for a bike ride. You should have a helmet at least. Knee and elbow pads are a good idea, too, especially if you're biking on a trail. There are a lot of places where you can hike – parks, trails, nature preserves. You'll be out in nature, so it's a great way to enjoy different types of plants and animals. Hiking usually requires that you move uphill, so it's good exercise, too. If you live near rock formations, take advantage of them. Rock climbing is a great way to exercise, and it also lets you actually touch nature.  If you plan on going rock climbing, make sure you talk to a sports goods store specialist about the equipment you need. You might also want to take a few rock climbing lessons before you tackle rock climbing on your own. If you don't know what you're doing, you can get seriously hurt.

Summary: Go for a walk or run. Ride your bike. Go for a hike. Go rock climbing.


For the visual field test, it’s important that you keep your eyes focused directly ahead. The doctor will stand about 3 feet (0.91 m) in front of you. They will hold out their hand about 1 foot (0.30 m) from one side of your face, and wiggle one of their fingers at the same level as your eyes. They’ll ask you to confirm that you saw the finger wiggle.  Testing your visual field involves making sure that your optic nerve correctly picks up and transmits visual data from your peripheral vision. It also determines if there are any lesions in your visual pathway. For a full visual field exam, the optometrist will test your optic nerve’s ability to gather visual data in each of the four quadrants of your peripheral vision: upper-right, upper-left, lower-right, and lower-left. The doctor will repeat the finger-wiggling exercise three times, and ask you to confirm that you saw the movement of their finger. If at any point you cannot see motion in your peripheral vision, let the doctor know. This may indicate a problem with your optic nerve. This is a further means of testing your optic nerve’s ability to pick up information in your peripheral vision. In a visual inattention test, the optometrist will hold out their hands as in a typical visual field exam, but they’ll wiggle more than one finger simultaneously. The doctor will ask you to identify how many fingers they wiggled and which specific fingers they were.
Summary: Remain still and look straight ahead at the optometrist. Keep your eyes ahead while the doctor repeats the procedure. Ask the doctor about a visual inattention test.