When knocking pteranodons out, be sure to have a bola, it doesn't take many tranq arrows to knock it out. Once it is down, put spike walls up around it (with a little space so you can go in and out) so it doesn't lose taming efficiency or die.
The pteranodon is a fast and versatile flying mount useful for traveling and scouting, though not always the ideal choice for battle. Knocking a pteranodon out doesn't take much, but can still be a challenge since it will immediately flee after being attacked. Once knocked out, taming is quite easy in comparison to other creatures, and with its low saddle requirements, this makes it an especially popular creature for newer survivors while still being versatile enough for more experienced survivors. What the pterandon lacks in stamina, weight, and health, it makes up with its speed.