The Reagle is a cross of the Rottweiler and the Beagle. Apparently, it is likely to weigh between 50-85 pounds dependent on parent size and gender . read more
As for mental maturity, a rottweiler typically mentally matures around 2 to 2.5 yrs of age, but sometimes don't fully mentally mature until right before, or at, 3yrs of age. So: 1st year: they grow upwards relatively quick while starting to build slight bulk near the later part of this year. read more