I think dog coins and other meme tokens are 99.99% scams and that you are better off investing in projects with real utility, like IOTA, which is working with automobile manufacturers on smart cities, smart cars, charging infastructure and taxis.
Indeed, many dog coins are scams but some of them can survive well. Dogecoin and Shiba Inu are two examples of the best meme coins that survive well in crypto market.