I have a 11 year old little Jack Russell that thinks he can run a marathon but get tired about a mile into our 4 mile walks.  This stroller has been great.  I can put him in it to rest for a bit a continue on our walk.  I put him in it at the farmers market so he does not get stepped on.  He loves it sits there very happy.  It has a nice smooth ride and is very easy to maneuver.  It can handle different terrains very well.