For me it’s cats 100% they are low maintenance and each of them have their own personality and they’ve been largely unchanged (ie further domesticated) for at least thousands of years. I just think they’re neat! 🐈 
Some people throw corn to attract them to their yard in Texas and when they shed their antlers it’s cool to see. They’re chill animals and very determined to obtain food! I hope you get to hang out with them sometime 🦌