how do they affect wildlife?
On islands, birds can contribute as much as 60% of a cat's diet; which is also a cause for reducing the numbers of island birds.
Cat
On islands, birds can contribute as much as 60% of a cat's diet. In nearly all cases, however, the cat cannot be identified as the sole cause for reducing the numbers of island birds, and in some instances, eradication of cats has caused a "mesopredator release" effect; where the suppression of top carnivores creates an abundance of smaller predators that cause a severe decline in their shared prey. 
where did the term 9 lives come from It is a myth in many cultures, cats have multiple lives as they exhibit the natural suppleness and swiftness to escape life-threatening situations. how are they classified? The domestic cat is regarded as a distinct species, "Felis catus". can they see in darkness? Yes, they have excellent night vision. what helps them do so? This is partly the result of cat eyes having a tapetum lucidum. what is it? It is a layer of tissue in the eye of many vertebrates. is it used by humans? Humans use scanning for reflected eyeshine to detect and identify the species of animals in the dark, and deploying trained search dogs and search horses at night. is there any artificial form of it? Yes, manufactured retroreflectors modeled after a tapetum lucidum are described in numerous patents and today have many uses. what are their uses on road? When the headlights of a car illuminate a retroreflective surface, the reflected light is directed towards the car and its driver. does it have any uses in sea transports? Yes, retroflective tape is used. has it been used on any other planet? Yes, on Mars. what was its use there? A similar device, the Laser Retroreflector Array (LaRA), has been incorporated in the Mars "Perseverance" rover. what are the superstitions associated with the animal discussed above? One of them is that a black cat "crossing one's path" leads to bad luck. can they transfer any diseases to humans? Yes, they can be infected or infested with viruses, bacteria, fungus, protozoans, arthropods or worms that can transmit diseases to humans.
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Cat [SEP] Impact on wildlife
On islands, birds can contribute as much as 60% of a cat's diet. In nearly all cases, however, the cat cannot be identified as the sole cause for reducing the numbers of island birds, and in some instances, eradication of cats has caused a "mesopredator release" effect; where the suppression of top carnivores creates an abundance of smaller predators that cause a severe decline in their shared prey. Domestic cats are, however, known to be a contributing factor to the decline of many species, a factor that has ultimately led, in some cases, to extinction. The South Island piopio, Chatham rail, and the New Zealand merganser are a few from a long list, with the most extreme case being the flightless Lyall's wren, which was driven to extinction only a few years after its discovery.