Where should i put my api key?

I’m new with the API’s and Im trying to do some stuff with it.

i’ve got my api key but i’ve no idea how it works; so this is the http https://api.thedogapi.com/v1/breeds where am i suppose to put my api key?
id like to have some pics and all the dogs info with it.

if i fetch just the http ill get just a few info…