Milwaukee's only real scare came when the 20-year-old Jennings crumpled to the floor in the closing seconds of the third quarter after he hurt his left knee in a collision driving to the basket.
Chris Bosh had 26 points and 10 rebounds for Toronto to extend his strong string of performances, but he had little help because Andrea Bargnani (sore right ankle) and Jose Calderon (hip) were out and Hedo Turkoglu was ineffective.
Ersan Ilyasova and Roko Ukic had 17 points each, Luc Richard Mbah a Moute had 16, Luke Ridnour 15, Carlos Delfino 14 and Andrew Bogut 12 for the Bucks.
The Raptors had another miserable defensive effort. Milwaukee shot 52.5 per cent from the field and 9 of 21 from beyond the arc.
Toronto, which came in allowing 108.3 points per game, fell to 0-7 when allowing opponents to shoot 50 per cent or better.
The Bucks finished a stretch of 15 games in 26 days without consecutive days off and controlled this one from the start, extending the lead to 20 early in the second half.
NOTES: Forbes ranked the Bucks as the NBA's least valuable franchise at US$254 million.
According to Forbes, it's $113 million less than the league average and $353 million less than the top-ranked Lakers.