Predict when animals will escape from your truck

Last couple of days I think I discovered something with regard to getting a reward or animals escaping. When you have a animal in your truck and you are within reach of a drop off point you should be able to see the number of dots you have to pass before you reach the drop off if you click on the drop off point. If the number is not there, but you are within reach, there is either a surprise on the road or your animals will escape.

I tried it several times, even with 2 animals in my truck, they escaped, spawned at same spot, and when I wanted to pick them up again I could only catch one, but there were 2 at the same spot.