No, dinosaurs are not alive today in 2023.
Dinosaurs are a group of extinct reptiles that lived on Earth for around 165 million years, from the late Triassic period (about 230 million years ago) until the end of the Cretaceous period (about 65 million years ago). During this time, they diversified into a wide variety of forms, from the small and agile to the large and powerful. However, at the end of the Cretaceous period, a mass extinction event wiped out all non-avian dinosaurs, leaving only their descendants, the birds, to continue on.
There is no scientific evidence to suggest that any species of dinosaur still exists today. The fossil record clearly shows that all non-avian dinosaurs went extinct at the end of the Cretaceous period. While some creatures, such as crocodiles and turtles, may have similar physical characteristics to dinosaurs, they are not considered true dinosaurs because they belong to different evolutionary lineages.
However, there have been many reported sightings of creatures that people have claimed to be dinosaurs. These sightings are usually attributed to mistaken identity, hoaxes, or misinterpretation of evidence. For example, some people have claimed to see pterosaurs, which were flying reptiles that lived at the same time as dinosaurs, but these sightings are not supported by scientific evidence.
One of the most well-known claims of living dinosaurs is the legend of the Loch Ness Monster, a creature that supposedly inhabits the deep, dark waters of Loch Ness in Scotland. Some people have suggested that the monster could be a surviving plesiosaur, a type of long-necked marine reptile that lived during the dinosaur era. However, there is no scientific evidence to support this theory, and most experts believe that the Loch Ness Monster is simply a myth or a hoax.
Another claim of living dinosaurs comes from a remote region of Africa called the Congo. In the early 20th century, reports began to emerge of a large, unknown animal that was said to live in the dense forests of the Congo basin. This creature, known as Mokele-mbembe, was described as having a long neck and tail, and walking on four legs like a sauropod dinosaur. However, despite numerous expeditions to the region, no conclusive evidence of Mokele-mbembe or any other living dinosaur has been found.
In conclusion, while there have been many reports of living dinosaurs, there is no scientific evidence to support the idea that any species of dinosaur still exists today. The fossil record clearly shows that all non-avian dinosaurs went extinct at the end of the Cretaceous period, and while their descendants, the birds, continue to thrive, they are not considered true dinosaurs. While it is possible that new discoveries may be made in the future that challenge our understanding of dinosaur extinction, at present, the evidence strongly suggests that dinosaurs are not alive today in 2023 or any other year.