Share to: It is our eyes that are capable of detecting a portion of the electromagnetic (EM) spectrum called visible light, or the optical spectrum.We describe the different frequencie â¦ s by color, with red being the lowest of the frequencies we can see.t is our eyes that are capable of detecting a portion of the electromagnetic (EM) spectrum called visible light, or the optical spectrum.
Young dogs can react unpredictably to electric dog fences, so understanding a puppy's development is essential to deciding when to start training the animal with the fence and collar. Generally, puppies should not be introduced to electric dog fences until they're at least four or five months old.
Contrary to some beliefs, potty training a puppy should start with the breeder very early in life. It is very important at 3 to 3.5 weeks old, when the pups become mobile and start to potty on their own, to set their room up PROPERLY. It is not really a natural thing for a dog to pee or poop in his crate.ups like it at opposite end. When they are 3 to 4 weeks, they will come out of their bed and pee right away, sometimes they only get their front feet out. After they are more mobile, you move the potty away from the bed area. I will line a litter box with paper, but not litter.