Just as you slip past the guards outside : by moving when they are not looking. Let the dog walk away, then wait and move toward him, leaving enough time to come to a complete stop (to stay invisible).
(see related question)
The docks are on the left side of the island. Get the decoder from headquarters, and the chameleon suit from Spyglass Eyewear, so you can slip past the guards and dogs.
when you get on spy island you go to the far left to get to the docks and to.......to save the spy!!
Use it to rescue the first kidnapped spy, who is being held at the docks to the left of Main Street. You can use the suit to slip past the guards, and past the dogs inside the warehouse.
Using the Chameleon Suit, slip past the guards and dogs at the docks and locate the first spy. There is no way to open the vault, but there is a large hole in its ceiling. (see related question)
There are only three dogs in the warehouse at the docks on Spy Island. (Their names are Fang , Slasher, and... Fluffy.)
When rescuing the First Spy (at the docks), you need the invisible Chameleon Suit to slip past the guards outside and the dogs inside. When you reach the vault, simply climb to the hole in its ceiling to release the spy. He will give you a clue and the Laser pen. (see related question)
You can rescue the first missing spy, who is being held on the docks. Use it to slip by the guards (you are invisible when standing perfectly still), and get inside. Go past the dogs and over the top of the locked room to free the spy.
The first spy is being held at the docks to the left of Main Street. Using the chameleon suit, you can slip past the guards and dogs. When you reach the spy, he is locked in a vault. Fortunately there is a large hole in its ceiling. (see the related question)
Three. Slip past them by running when they turn away, and stop to become invisible. (In order to reach the inside of the docks, you already have the Chameleon Suit.)
The Chameleon Suit, which lets you blend in with any background, can be used to slip past the guards and dogs at the Docks, so that you can rescue the first kidnapped spy. By standing still when they approach, you will not be attacked.
4
You get the Laser pen when you rescue the first spy (at the docks). You need the chameleon suit to get past the guards at the dock. Get the Chameleon Suit and slip past the guards and dogs, then climb over the ceiling to reach the first spy. He will give you a message and the Laser Pen, to help you rescue the second spy on Toupee Terrace.