diff --git a/characters/pests/Slug.gd b/characters/pests/Slug.gd
index 65c39cb..50194a0 100644
--- a/characters/pests/Slug.gd
+++ b/characters/pests/Slug.gd
@@ -1,6 +1,7 @@
 extends KinematicBody2D
 
 const SPEED := 50
+const HEAL_RATE_PER_OLIVE := 1.0
 
 var _velocity := Vector2.ZERO
 
@@ -8,7 +9,7 @@ onready var _agent: NavigationAgent2D = $NavigationAgent2D
 
 var target: Node2D = null
 
-var eaten_olives: int = 0
+var eaten_olives: float = 0
 var hp: float = 0
 
 
@@ -25,9 +26,12 @@ func _find_target() -> void:
 		var best_tree = null
 		var best_tree_juiciness = -1
 		for tree in trees:
-			var tree_distsq = self.global_position.distance_squared_to(tree.global_position)
-			var tree_food = tree.calculate_food(sqrt(tree_distsq) / SPEED)
-			var tree_juiciness = tree_food / tree_distsq
+			var tree_distsq := self.global_position.distance_squared_to(tree.global_position)
+			var tree_dist := sqrt(tree_distsq)
+			var tree_food = tree.calculate_food(tree_dist / SPEED)
+			if tree_food < 0.1:
+				continue
+			var tree_juiciness = tree_food / tree_dist
 			
 			if tree_juiciness > best_tree_juiciness:
 				best_tree = tree
@@ -39,8 +43,27 @@ func _find_target() -> void:
 		_agent.set_target_location(target.global_position)
 	
 func _at_target() -> void:
-	print("at target")
+	if target.is_in_group("olive_trees"):
+		_eating()
 	pass
+	
+func _eating() -> void:
+	var tree = target
+	while true:
+		var just_eaten = tree.eat_food()
+		print("ate ", just_eaten)
+		eaten_olives += just_eaten
+		hp += just_eaten
+		_on_eaten_olives_updated()
+		
+		# TODO sfx
+		# TODO vfx
+		
+		yield(get_tree().create_timer(2.0, false), "timeout")
+		
+		if just_eaten <= 0.1:
+			_find_target()
+			return
 
 func _physics_process(delta: float) -> void:
 	if target == null:
@@ -68,6 +91,10 @@ func _physics_process(delta: float) -> void:
 	#print(_velocity)
 	var _vel := move_and_slide(_velocity)
 
+func _process(delta: float) -> void:
+	hp = min(eaten_olives, hp + eaten_olives * HEAL_RATE_PER_OLIVE * delta)
+	_on_hp_updated()
+
 func _on_hp_updated() -> void:
 	if hp == eaten_olives:
 		self.modulate.a = 1.0
@@ -81,7 +108,7 @@ func _on_eaten_olives_updated() -> void:
 	self.modulate.b = non_red
 
 func interact(_player: Node2D) -> bool:
-	self.hp -= 1
+	self.hp -= 1.0
 	if self.hp < 0:
 		# the slug is dead!
 		$SlimyWalkSfx.stop()
@@ -92,3 +119,10 @@ func interact(_player: Node2D) -> bool:
 		self._on_hp_updated()
 	
 	return true
+
+
+func _on_NavigationAgent2D_target_reached() -> void:
+	var dsq := self.global_position.distance_squared_to(target.global_position)
+	print("reached distsq = ", dsq)
+	if dsq < 256:
+		self._at_target()
diff --git a/characters/pests/Slug.tscn b/characters/pests/Slug.tscn
index ef4ab97..45f8c86 100644
--- a/characters/pests/Slug.tscn
+++ b/characters/pests/Slug.tscn
@@ -26,7 +26,7 @@ animations = [ {
 radius = 6.0
 height = 40.0
 
-[node name="Slug" type="KinematicBody2D"]
+[node name="Slug" type="KinematicBody2D" groups=["interactable"]]
 collision_layer = 2
 collision_mask = 0
 script = ExtResource( 7 )
@@ -49,3 +49,5 @@ path_max_distance = 64.0
 
 [node name="SlimyWalkSfx" type="AudioStreamPlayer2D" parent="."]
 stream = ExtResource( 8 )
+
+[connection signal="target_reached" from="NavigationAgent2D" to="." method="_on_NavigationAgent2D_target_reached"]
diff --git a/levels/Level0A.tscn b/levels/Level0A.tscn
index 17103ff..8597d44 100644
--- a/levels/Level0A.tscn
+++ b/levels/Level0A.tscn
@@ -81,10 +81,10 @@ position = Vector2( 247, 412 )
 position = Vector2( 486, 154 )
 
 [node name="Node2D" parent="World/YSort" instance=ExtResource( 3 )]
-position = Vector2( 701, 189 )
+position = Vector2( 1134, 649 )
 
 [node name="Node2D2" parent="World/YSort" instance=ExtResource( 3 )]
-position = Vector2( 135, 190 )
+position = Vector2( 574, 653 )
 
 [node name="Node2D3" parent="World/YSort" instance=ExtResource( 4 )]
 position = Vector2( 542, 475 )
diff --git a/scenery/facilities/OliveTree.gd b/scenery/facilities/OliveTree.gd
index 3800816..d325903 100644
--- a/scenery/facilities/OliveTree.gd
+++ b/scenery/facilities/OliveTree.gd
@@ -34,3 +34,28 @@ func calculate_food(in_time: float) -> float:
 			food += child.calculate_food_on_bud(in_time)
 	
 	return food
+
+func eat_food() -> float:
+	if not has_been_munched:
+		# TODO sfx
+		# TODO show munched sprite... colour will do for now
+		$Sprite.modulate = Color(0.6, 0.4, 0.4)
+		has_been_munched = true
+		for child in self.get_children():
+			# curse all buds
+			# TODO they will recover when next harvested, so this isn't as bad
+			# as it sounds..
+			if child.has_method("drop_olive"):
+				child.grow_rate *= 0.5
+		return 2.0
+	
+	var limit = 1.0
+	var eaten = 0
+	for child in self.get_children():
+		if child.has_method("drop_olive"):
+			eaten += child.eat_food_from_bud(limit - eaten)
+		
+		if limit - eaten < 0.01:
+			break
+	
+	return eaten
diff --git a/scenery/facilities/OliveTreeBud.gd b/scenery/facilities/OliveTreeBud.gd
index 5bafa16..c2ba776 100644
--- a/scenery/facilities/OliveTreeBud.gd
+++ b/scenery/facilities/OliveTreeBud.gd
@@ -61,3 +61,12 @@ func drop_olive():
 
 func calculate_food_on_bud(in_time: float) -> float:
 	return clamp(progress + in_time * grow_rate, 0.0, 1.0)
+
+func eat_food_from_bud(limit: float) -> float:
+	if limit >= progress:
+		var eaten = max(0.0, progress)
+		self.reset()
+		return eaten
+	else:
+		set_progress(progress - limit)
+		return limit