Method isWet

src/main/java/net/minecraft/entity/Entity.java:1113–1116

Checks if this entity is either in water or on an open air block in rain (used in wolves).

()

     * Checks if this entity is either in water or on an open air block in rain (used in wolves).
     */
    public boolean isWet()
    {
        return this.inWater || this.worldObj.canLightningStrike(new BlockPos(this.posX, this.posY, this.posZ)) || this.worldObj.canLightningStrike(new BlockPos(this.posX, this.posY + (double)this.height, this.posZ));
    }

    /**
     * Checks if this entity is inside water (if inWater field is true as a result of handleWaterMovement() returning