diff --git a/experiments/predatorprey/main.go b/experiments/predatorprey/main.go
index 705542d..6276d64 100644
--- a/experiments/predatorprey/main.go
+++ b/experiments/predatorprey/main.go
@@ -10,22 +10,22 @@ import (
 	"math/rand"
 )
 
-var numPrey = flag.Int("numPrey", 1200, "the number of prey")
+var numPrey = flag.Int("numPrey", 300, "the number of prey")
 
-var initialPreyEnergy = flag.Int("initialPreyEnergy", 20, "initial prey energy")
+var initialPreyEnergy = flag.Int("initialPreyEnergy", 15, "initial prey energy")
 var preyMaxLife = flag.Int("preyMaxLife", 25, "the max lifespan of prey (in simulation steps)")
 var preyReproductiveAge = flag.Int("preyReproductiveAge", 4, "the age a prey might reproduce")
 var preyReproductionEnergy = flag.Int("preyReproductionEnergy", 4, "energy required for prey reproduction")
-var preyReproductionProbability = flag.Float64("preyReproductionProbability", 0.5, "preys probability of reproducing")
+var preyReproductionProbability = flag.Float64("preyReproductionProbability", 0.4, "preys probability of reproducing")
 
 
 
 var numPred = flag.Int("numPred", 30, "the number of predators")
-var initialPredatorEnergy = flag.Int("initialPredatorEnergy", 30, "initial predator energy")
-var predatorMaxLife = flag.Int("predatorMaxLife", 40, "the max lifespan of predators (in simulation steps)")
+var initialPredatorEnergy = flag.Int("initialPredatorEnergy", 40, "initial predator energy")
+var predatorMaxLife = flag.Int("predatorMaxLife", 60, "the max lifespan of predators (in simulation steps)")
 var predatorMaxEnergy = flag.Int("predatorMaxEnergy", 30, "max amount of energy a predator can have")
 var predatorReproductionEnergy = flag.Int("predatorReproductionEnergy", 50, "predator reproductive energy")
-var predatorReproductionProbability = flag.Float64("predatorReproductionProbability", 0.1, "predators probability of reproducing")
+var predatorReproductionProbability = flag.Float64("predatorReproductionProbability", 0.05, "predators probability of reproducing")
 
 
 type Predator struct {
@@ -60,7 +60,7 @@ func (sm *Predator) Run(env *core.Environment, t *core.Turtle) {
 			sm.Energy = int(math.Max(float64(sm.Energy)+10, float64(*predatorMaxEnergy)))
 		}
 	}
-	t.FollowGradient(env, 1, 3, "scent")
+	t.FollowGradient(env, 3, 1, "scent")
 	t.Step(env)
 }