Butt compilation for season 3. I tried to limit the amount of flank shots in order to place more focus on the actual butt.
 
For those wondering, the animation error is in the scene of Rainbow pushing Fluttershy, as one of her wings is backwards.
 
Season 1: >>1893205, >>1893206, and >>1893208  
Season 2: >>1899502 and >>1899503  
Season 3: >>1906370 and >>1906372 (deleted)  
Season 4: >>1912838, >>1912839, and >>1912840  
Season 5: >>1919282, >>1919283, and >>1919284  
Season 6: >>1924051, >>1924052, and >>1924054  
Season 7: >>1928215, >>1928217, and >>1928218  
Season 8: >>1934253, >>1934254, >>1934255, and >>1934256  
Movie: >>1934483