They make a hitch for a Rav4? I didn’t know you could tow anything with that little hatch back. I guess you could use it for rear-collision protection. But why bother if you can’t tow over 500 lbs. 
Huh? It hasn’t been “small” since the first generation and it’s plenty capable.
Gross weight carrying capacity: 3500 lbs. trailer weight and 525 lbs. tongue weight