I have spent the last few months with Yang, my new dog, one I am co-raising to be a service dog. He will stay with me for 14 months or so. If he proves to be good enough, he will be sent to the guide dog school for further training and eventually become a seeing-eye dog.

Dogs help people in lots of ways, but service dogs are different from working dogs, therapy (治疗) dogs, and emotional support animals. Service dogs are trained to do specific tasks for people with disabilities. They can pull wheelchairs, get medicine, remind you to take your medicine, help keep you stable while walking, and alert (警示) you to important sounds or dangerous things in your way. Service dogs have lots of different skills, depending on the disability they are trained for.

No matter how you get a service dog, they usually go through a tough training program with an experienced trainer. In the last month of training, the service dog spends time with you and the instructor. The instructor teaches the dog to help you, and tells you how to command, handle, and care for the dog.

Service dogs need obeying skills and other very special skills. When you think about how to get a service dog, consider finding one with relevant characters. They should be calm, be able to learn and hold onto information. To train a service dog, you should start with basic skills like focusing on you, ignoring disturbing factors and being able to stay on task in new places with new people, smells, and animals.

It’s important to keep your dog healthy so that they can best help you. Give your dog access to plenty of fresh water and a balanced diet, and keep their vaccinations (疫苗) updated. Yearly visits to the vet are also important to make sure you catch any changes in your dog’s health.

While Ellard Hunting and fellow researchers were out studying the weather at a field station in England, they noticed something unexpected on their instruments. Though there was no storm approaching, the scientists’ electric field monitors recorded a strange increase in atmospheric electric charge (大气电荷).

Nearby, honeybees that lived in on-site hives were swarming (蜂拥) as they attempted to find a new home. When the team took a closer look at their data, they discovered that the swarming honeybees had created an atmospheric electric charge. The researchers shared more details about their findings in the journal Science.

“This is the first report of biology as a source of space charge.” says Hunting, a biophysicist at the University of Bristol in England. Scientists had known that individual bees carry a small charge while flying through the air, caused by the friction of their body parts against the air and each other. It’s similar to how rubbing a balloon on a piece of cloth creates static electricity. Scientists believe a bee’s charge helps pollen (花粉) stick to it and signals to other bees which flowers have already been visited. But until now, researchers had never recorded such a high voltage (电压) among swarming honeybees.

In terms of electricity generation, a bee swarm’s charge isn’t so impressive: It would take about 50 billion bees to power an LED light. But compared to the charges produced by common weather events, the bees’ charge density was six times greater than an electrified dust storm and eight times greater than a thunderstorm cloud.

Using the honeybee data, the researchers created a model to predict the potential atmospheric electric charge of other insects, including locusts (蝗虫), moths and butterflies. “Locusts swarm on biblical scales.” says Liam O’Reilly, a co-author and biologist at the University of Bristol. Clouds of these insects can expand up to 1,200 square kilometres and contain roughly 30 million locusts per square kilometer. The researchers predict locusts would have a much bigger influence on the atmosphere compared to honeybees.

Scientists hope to continue exploring how biology influences physics and are curious to know if something similar is happening with other wildlife, such as birds and bats.

Dogs bark at each other for a variety of reasons, according to Trevor Smith, a dog trainer. “But mainly,” he says, “dogs use barking as their primary communication tool to express their needs.” It may be especially difficult when they bark at their fellow four-legged friends-which begs the question: 【小题1】

They Are Feeling Anxious

Your dog may be anxious by nature, and being around other dogs may heighten his sensitivity. And he may respond with his primary communication tool: barking. 【小题2】 But with time and patience, most dog-barking issues can be managed.

【小题3】

A dog may bark at other dogs to try to engage in play. He’s essentially calling the other dog, trying to get it to join in the fun. If you’re at the dog park and know your dog generally plays well with others, now is the time to set him free so he can engage in some positive playtime.

They Are Being Angry

A dog that barks at other dogs may or may not ever get to the point where he can play with other dogs. 【小题4】 Others just aren’t friendly with other dogs.

If your dog’s facial expression, tail position and barking show he’s feeling playful, the solution to stopping him from barking may be to let him play or socialize with other pups in an environment where he feels safe. 【小题5】 “Through consistently positive information, your furry friend will learn which behaviors are rewarded, avoid those that receive no rewards and become comfortable in situations where they encounter the disrupting stimuli.”