Protecting the health and safety of the population in general is the responsibility of the Police Department, the Health Department (or Health Ministry in some countries), and also the Department of Environmental Protection or of Environmental Conservation. But ultimately the responsibility for the health and safety of each individual rests with that individual. The health and safety of the working population is the responsibility of the Occupational Safety and Health Administration and its state equivalents (in the US), of the Health and Safety Executive (in the UK) and of equivalent agencies in other countries. But the ultimate responsibility for health and safety in the workplace rests with the employer and the employee.
The role of the health protection agency is to be an independent body that focuses on the health of the population. They are set up to protect the public from disease and illness.
Occupational Safety and Health Agency (OSHA)
The Environmental Protection Agency (EPA) was created by the United States federal government in 1970 to protect human health and the environment by enforcing regulations and conducting research on environmental issues.
Police or peace officers are responsible for keeping order in a certain territory. The are supposed to be the physical force behind the judicial law in a given area to protect the general population.
This question is unclear. Do you mean "is your pet supposed to protect you" or "are you supposed to protect your pet"? If you are asking if your pet is supposed to protect you, then no. Your pet is you, the owner's, responsibility and it really not a pet's job to protect you. Even a lot of dogs do not have a natural guarding instinct and will prefer to hide in situations it does not like. If the question is "are you supposed to protect your pet?" then yes, absolutely! A pet, no matter what species it is, depends on the owner for its health, happiness and safety - a good owner strives to provide all these things. A pet should not be used as a status symbol, or used as a commodity.
EPA
Health Protection Agency was created in 2003.
Ocupational Safety and Health Administration (OSHA)
Occupational Safety and Health Administration (OSHA)
Occupational Safety and Health Administration (OSHA)
That would be the EPA aka the Environmental Protection Agency.
Public Health Agency of Canada was created in 2004.