It seems that, with the exception of Chomper, Sharpteeth always try and eat the kids when they encounter them. But what if they encounter a Sharptooth that HAD already eaten, say, a half hour before?
1.) The Sharptooth would kill them and store them for later.
2.) The Sharptooth would ignore them.
3.) The kids wouldn’t stick around long enough to find out the Sharptooth was full.
4.) The Sharptooth would befriend them.
"Time is not our enemy, it is our friend. It gives us new opportunities and washes away our bad experiences and failures. It provides us with new experiences, people, and places, and by taking old ones away, reminds us to appreciate the moment while we can."