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Zoology science fair project:
What percent of street dogs have homes and what percent do not have homes?

Science Fair Project Information
Title: What percent of street dogs have homes and what percent do not have homes?
Subject: Zoology
Grade level: Middle School - Grades 7-9
Academic Level: Ordinary
Project Type: Experimental
Cost: Low
Awards: 2nd place, Canada Wide Virtual Science Fair ($50)
Affiliation: Canada Wide Virtual Science Fair (VSF)
Year: 2010
Description: In order to answer the question of this poject, the following strategy was used: The dogs on a specific place were counted and identified during the day and night times. If there are fewer dogs at night, then it is possible that the missing dogs have homes. And if the same dogs are present at the specific place by day and night then it is likely that they do not have homes.
Link: http://www.virtualsciencefair.org/2010/recixl2
Short Background

Stray Dogs

Stray dogs are domesticated dogs that lived with people at some point, usually as pets. They have either been abandoned or accidentally released into urban areas, and now fend for themselves. These dogs' offspring are also considered as strays, so the term "stray" may be applied to many generations removed from the original stray founder(s).

The size of stray dog populations always corresponds to the size and character of the human population of the area. Urban features which create and sustain stray dog populations:

1) Large amounts of exposed garbage, which provide an abundant source of food
2) A population of slum and street-dwellers, who often keep the dogs as free-roaming pets, like in India.

Some problems caused by stray dogs: Rabies can be a fatal disease which can be transmitted to humans. Although all warm-blooded animals can get and transmit rabies, dogs are one the most common carriers. Dog bites can occur when dogs are trying to mate or fighting among themselves. Pedestrians and other humans in the vicinity may be bitten by the fighting dogs. Females with pups are often protective and may bite people who approach their litter. Barking and howling is an accompaniment to dog fights which invariably take place over mating. Urine smell is an unsavory product of territory marking.

Some of the stray dogs in Bucharest are seen crossing the large streets at pedestrian crosswalks. The dogs have probably noticed that when humans cross streets at such markings, cars tend to stop.

See also: https://en.wikipedia.org/wiki/Free-ranging_urban_dog

Source: Wikipedia (All text is available under the terms of the GNU Free Documentation License and Creative Commons Attribution-ShareAlike License.)

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