diff --git a/public/images/maciejpedzich-placeholder.jpg b/public/images/maciejpedzich-placeholder.jpg
new file mode 100644
index 0000000..e7a28bc
Binary files /dev/null and b/public/images/maciejpedzich-placeholder.jpg differ
diff --git a/src/content/cats/maciejpedzich-placeholder.json b/src/content/cats/maciejpedzich-placeholder.json
new file mode 100644
index 0000000..473989c
--- /dev/null
+++ b/src/content/cats/maciejpedzich-placeholder.json
@@ -0,0 +1,12 @@
+{
+  "name": "Placeholder",
+  "description": "This is a placeholder cat with a photo taken from placekitten.com",
+  "image": {
+    "src": "/images/maciejpedzich-placeholder.jpg",
+    "alt": "Sample alt text"
+  },
+  "owner": {
+    "name": "Maciej Pędzich",
+    "link": "https://maciejpedzi.ch"
+  }
+}
diff --git a/src/content/config.ts b/src/content/config.ts
new file mode 100644
index 0000000..012ecc6
--- /dev/null
+++ b/src/content/config.ts
@@ -0,0 +1,20 @@
+import { z, defineCollection } from 'astro:content';
+
+const cats = defineCollection({
+  type: 'data',
+  schema: z.object({
+    name: z.string(),
+    description: z.string().max(250),
+    image: z.object({
+      src: z.string(),
+      alt: z.string()
+    }),
+    passedAway: z.boolean().optional().default(false),
+    owner: z.object({
+      name: z.string(),
+      link: z.string().optional()
+    })
+  })
+});
+
+export const collections = { cats };
diff --git a/src/env.d.ts b/src/env.d.ts
index f964fe0..acef35f 100644
--- a/src/env.d.ts
+++ b/src/env.d.ts
@@ -1 +1,2 @@
+/// <reference path="../.astro/types.d.ts" />
 /// <reference types="astro/client" />