diff --git a/js/game.js b/js/game.js
index 79d1700..ad8f6c0 100644
--- a/js/game.js
+++ b/js/game.js
@@ -62,6 +62,7 @@ function createInitialState() {
 
 let state = createInitialState();
 let saveEligible = false;
+let scoreSavedThisRun = false;
 
 window.addEventListener('keydown', (e) => {
   if (["ArrowUp", "ArrowDown", "ArrowLeft", "ArrowRight"].includes(e.key)) e.preventDefault();
@@ -79,6 +80,7 @@ restartBtnEl.addEventListener('click', () => {
   deathScreenEl.classList.add('hidden');
   saveScoreFormEl.classList.add('hidden');
   saveEligible = false;
+  scoreSavedThisRun = false;
 });
 
 saveScoreFormEl.addEventListener('submit', async (e) => {
@@ -93,6 +95,7 @@ saveScoreFormEl.addEventListener('submit', async (e) => {
   });
 
   saveEligible = false;
+  scoreSavedThisRun = true;
   saveScoreFormEl.classList.add('hidden');
   await populateLeaderboard();
 });
@@ -174,8 +177,8 @@ async function populateLeaderboard() {
   });
 
   const qualifies = scores.length < 10 || state.score > (scores[scores.length - 1]?.score ?? -1);
-  saveEligible = qualifies;
-  saveScoreFormEl.classList.toggle('hidden', !qualifies);
+  saveEligible = qualifies && !scoreSavedThisRun;
+  saveScoreFormEl.classList.toggle('hidden', !saveEligible);
 }
 
 async function kill(reason) {
@@ -224,16 +227,31 @@ function updateAnts(dt) {
   }
 }
 
+const PTERODACTYL_LANES = [
+  // low lane: standing dino collides, ducking dino should pass underneath
+  { y: groundY - 80, height: 28 }
+];
+
+function getPterodactylHitbox(flyer) {
+  return {
+    x: flyer.x + 6,
+    y: flyer.y + 5,
+    width: flyer.width - 12,
+    height: flyer.height - 10
+  };
+}
+
 function updatePterodactyls(dt) {
   if (state.score <= 100) return;
   state.pteroSpawnTimer -= dt;
 
   if (state.pteroSpawnTimer <= 0) {
+    const lane = PTERODACTYL_LANES[Math.floor(Math.random() * PTERODACTYL_LANES.length)];
     state.pterodactyls.push({
       x: state.cameraX + canvas.width + 80,
-      y: groundY - (state.player.standingHeight - 24),
+      y: lane.y,
       width: 54,
-      height: 26,
+      height: lane.height,
       vx: -280
     });
     state.pteroSpawnTimer = 2.2;
@@ -242,7 +260,7 @@ function updatePterodactyls(dt) {
   const p = state.player;
   for (const flyer of state.pterodactyls) {
     flyer.x += flyer.vx * dt;
-    if (intersects(p, flyer)) applyHit('Pterodactyl collision. Duck next time!');
+    if (intersects(p, getPterodactylHitbox(flyer))) applyHit('Pterodactyl collision. Duck next time!');
   }
   state.pterodactyls = state.pterodactyls.filter((f) => f.x + f.width > state.cameraX - 150);
 }