Wild Animals/physics


.A stray dog used to bark at the locals in the street. However each time whenever the person who is barked at, approached the dog, it would run away cowardly.
a.Why does the dog keeps on  barking in a threatening manner whereas it is actually afraid of the locals?
b.Is it true in the saying "The dog that barks doesn’t bite" ? If it is true,why is it so?

c.Do stray dogs ever bite people or only trained “security” dogs bite?

Dear Nurul

Thank you for your question. I also wish to thank the authors of the websites I used.

a. Many animals use bluff to avoid confrontation, where they could get hurt.
http://www.wikihow.com/Protect-Yourself-from-a-Stray-Dog says that barking is an example of fear behaviour and indicates that the dog doesn't want you to get any closer. It means that the dog would prefer you to go away rather than that it wants to bite you. Biting you would put the dog at risk of you retaliating and possibly killing the dog.
b. If you don't go away, the dog may bite you. I was once asked to look after a flat. The owners had left a dog and her puppies. The mother barked and eventually bit me. One of the owners returned and took the dogs away on holiday.

c.Various websites, such as http://www.wikihow.com/Protect-Yourself-from-a-Stray-Dog, state that any dog can bite, regardless of breed or whether they are stray. Please note that an owner may protect a dog from danger. A stray dog does not have an owner, so it has to protect itself.

I hope this helps. http://en.wikipedia.org/wiki/Dog_bite gives additional information.

All the best


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Jonathan Wright


I can answer questions about wild mammals and other animals, as well as extinct animals and zoos. I am not an expert about every animal species. I can look up information from books and the internet, but can't verify if all the information is true. Please don't ask questions about: 1. Pets. I am not a vet. Please contact a vet if your pet is ill. You may need to spend some money if you want your pet to live. Don't get a pet if you don't know how to look after it and if you can't provide it with the space, food and possible companions that will help it live a healthy life. Don't take animals from the wild, unless they are ill and/or injured and you can protect them until a wildlife charity can help. It is cruel to take animals from their parents, especially if the parents will look for the babies, while putting their other babies at risk. You may be breaking the law by keeping wild animals or you may need a licence to look after some species. Please check with a local wildlife group. 2. Eggs: Please don't remove eggs from nests. The mother birds provide the right temperature for the eggs and won't sit on them if the temperature is warm enough for them to develop naturally. It is illegal to remove eggs of some species and, unless you have an incubator or a broody hen, the egg may not develop. If you are allowed to touch the eggs, you can candle them to see if they are fertile. If theys aren't fertile, they won't hatch. 3. Fights: Please don't ask about fights between different animals. These questions assume that individuals of two species fight each time they meet and that one species will always be victorious over another. This is untrue. There are cases where a live mouse has been fed to a venomous snake, bitten the snake leading to the snake's demise. 4: Diseases: Please ask doctors or other medical experts about diseases that you may catch from animals. I can't advise on how to deal with viruses, bacteria etc.


I have a zoology degree and have been interested in animals since I was two. I am a zoo volunteer at London Zoo. I have appeared on a BBC Radio Quiz, 'Wildbrain'.

WWF. ZSL. Natural History Museum. RSPB. London Bat Group.

Newsletters of London Zoo volunteers and the London Bat Group

BSC degree in Zoology. 'A' level in Zoology. 'O' Level in Biology.

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