Isla Perro vs Perro Chico vs Perro Grande: Solving San Blas's Confusing Island Names

“Isla Perro” refers to a group of islands in San Blas, not a single destination. Within that group, Perro Chico (“little dog”) is the small, uninhabited island famous for its snorkelable shipwreck, while Perro Grande (“big dog”) is a larger, inhabited island known for wide beaches and overnight cabin stays. They’re neighbors, not the same place.

Why this trips people up

“Perro” means “dog” in Spanish, and San Blas has a cluster of islands in the same area that share the name with different modifiers — Perro Chico, Perro Grande, and the general “Isla Perro” grouping used to describe the wider area. When a tour itinerary or blog post just says “Isla Perro” without specifying which one, it’s genuinely ambiguous unless you know the area.

Perro Chico: the shipwreck island

Perro Chico is small — walkable in under ten minutes — and uninhabited. Its claim to fame is a real sunken vessel resting in shallow water just offshore, now an artificial reef covered in coral and popular with snorkelers of every skill level. It’s a day-stop, not an overnight destination.

Perro Grande: the spacious, inhabited neighbor

Perro Grande is noticeably larger, with genuinely wide stretches of white-sand beach instead of the narrow strips common on smaller cays. It’s inhabited, and simple beachfront cabins are available here for travelers doing an overnight San Blas package.

Isla Diablo: a third island, same general area

Adding to the confusion, Isla Diablo — a separate, family-friendly island with Guna-run cabins — sits within the same broader Isla Perro group. It has its own name and its own dedicated day tour, distinct from both Perro Chico and Perro Grande.

The practical takeaway

If a tour description mentions “Isla Perro” without more detail, ask which specific island or islands are actually on the route — Perro Chico for the shipwreck snorkel, Perro Grande for beach space and an overnight stay, or Isla Diablo for its own distinct itinerary. Our Isla Diablo day tour and VIP day tour each cover a genuinely different combination, and we’re specific about which islands are included in each.