Assassin Bug
A flea is a wingless bloodsucking insect that feeds on the blood of mammals and birds. Fleas can jump long distances and are often found on household pets like dogs and cats. They can also bite and feed on humans.
Three legged stands are often called stools. In photography a three legged stand is called a tripod.
It is a tropical insect often found in association with palms
flys.
butterflies
The insect you are describing is most likely a red velvet ant, which is actually a type of wingless wasp. The black legs in front are often mistaken for antennae, which are absent in this species. The distinct coloration serves as a warning signal to predators that they are venomous.
ant trees
Occasionally dogs do have only one leg, but this is rare and does not happen very often.
flies are commonly associated with garbage
Buga is not the term for an insect. A buga is a person who has recently swallowed an insect flying in the air.
A small often microscopic animal or insect is often referred to as a microorganism or a microbe. These terms encompass a wide range of tiny organisms including bacteria, viruses, fungi, and protozoa.
This insect is likely a cricket. Crickets are known for their distinctive chirping sound that is created when they rub their wings together. They are nocturnal creatures, so they are more often heard than seen during the day.