diff --git a/gerbil-manager-web/e2e/juvenile-details.spec.ts b/gerbil-manager-web/e2e/juvenile-details.spec.ts
index 28ede90..92a3d7a 100644
--- a/gerbil-manager-web/e2e/juvenile-details.spec.ts
+++ b/gerbil-manager-web/e2e/juvenile-details.spec.ts
@@ -1,4 +1,4 @@
-/** LITTER-JUVENILE-DETAILS: Jungtier-Felder (Farbschlag/Abgabe/Verstorben) im Wurf-Detail. */
+/** LITTER-JUVENILE-DETAILS + JUVENILE-AVATARS: Jungtier-Felder und Foto-Avatare im Wurf-Detail. */
 import { de, expect, skipUnlessMock, test } from './fixtures'
 
 const t = de.pages.litters
@@ -28,3 +28,18 @@ test('Jungtier-Liste zeigt Farbschlag, Abgabedatum, Abnehmer, Todesdatum und Tod
   await expect(bennyCard).toContainText(t.detail.juvenileFields.dateOfDeath)
   await expect(bennyCard).toContainText(`${t.detail.juvenileFields.causeOfDeath}: Altersschwäche`)
 })
+
+test('JUVENILE-AVATARS: Pippa zeigt Foto-Avatar, Benny zeigt GerbilIcon', async ({ page }) => {
+  skipUnlessMock()
+  await page.goto('/wuerfe/w-kruemel')
+  await expect(page.getByRole('heading', { name: 'Wurf K' })).toBeVisible()
+
+  // Pippa hat profilePhotoUrl → <img.juvenile-photo__avatar> sichtbar
+  const pippaCard = page.getByRole('link', { name: /Pippa/ })
+  await expect(pippaCard.locator('.juvenile-photo__avatar')).toBeVisible()
+
+  // Benny hat kein Foto → kein img, SVG-Icon (GerbilIcon) sichtbar
+  const bennyCard = page.getByRole('link', { name: /Benny/ })
+  await expect(bennyCard.locator('.juvenile-photo__avatar')).not.toBeVisible()
+  await expect(bennyCard.locator('svg')).toBeVisible()
+})
diff --git a/gerbil-manager-web/e2e/mock-data.ts b/gerbil-manager-web/e2e/mock-data.ts
index 66a3c4c..5fa5877 100644
--- a/gerbil-manager-web/e2e/mock-data.ts
+++ b/gerbil-manager-web/e2e/mock-data.ts
@@ -153,11 +153,13 @@ export function seedDb(): MockDb {
       notes: 'neugieriger Entdecker',
     },
     // LITTER-JUVENILE-DETAILS: Jungtiere für Wurf K mit Zusatzinfos.
+    // JUVENILE-AVATARS: Pippa hat profilePhotoUrl (1×1-PNG data-URI) → Avatar-Img sichtbar.
     {
       ...gerbil('pup-abgabe', 'Pippa', 'female', '2025-03-12', 'w-kruemel', 'cv-gold'),
       status: 'GivenAway' as const,
       goHomeDate: '2025-05-01',
       receiverContactId: 'con-huber',
+      profilePhotoUrl: 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==',
     },
     {
       ...gerbil('pup-verstorben', 'Benny', 'male', '2025-03-12', 'w-kruemel', null),
diff --git a/gerbil-manager-web/src/pages/StammbaumPage.tsx b/gerbil-manager-web/src/pages/StammbaumPage.tsx
index 4612121..8a3b994 100644
--- a/gerbil-manager-web/src/pages/StammbaumPage.tsx
+++ b/gerbil-manager-web/src/pages/StammbaumPage.tsx
@@ -381,14 +381,13 @@ function PedigreeCard({
   const g = node.gerbil
   const chip = farbschlag ? chipColorFor(farbschlag) : null
   const dob = g.dateOfBirth ? formatDate(g.dateOfBirth) : null
-  const [imgError, setImgError] = useState(false)
-  useEffect(() => setImgError(false), [g.id])
-  const photoUrl =
-    !imgError && g.profilePhotoUrl
-      ? /^(https?:|data:|\/\/)/.test(g.profilePhotoUrl)
-        ? g.profilePhotoUrl
-        : `${API_BASE_URL}${g.profilePhotoUrl}`
-      : null
+  const [failedUrl, setFailedUrl] = useState<string | null>(null)
+  const rawUrl = g.profilePhotoUrl
+    ? /^(https?:|data:|\/\/)/.test(g.profilePhotoUrl)
+      ? g.profilePhotoUrl
+      : `${API_BASE_URL}${g.profilePhotoUrl}`
+    : null
+  const photoUrl = rawUrl !== failedUrl ? rawUrl : null
   return (
     <div
       className={isRoot ? 'pedigree-card pedigree-card--root' : 'pedigree-card'}
@@ -402,7 +401,7 @@ function PedigreeCard({
             src={photoUrl}
             alt={g.name || ''}
             className="pedigree-card__avatar"
-            onError={() => setImgError(true)}
+            onError={() => setFailedUrl(rawUrl)}
           />
         ) : (
           <GerbilIcon size="1.6rem" aria-hidden="true" />
diff --git a/gerbil-manager-web/src/pages/WurfDetailPage.tsx b/gerbil-manager-web/src/pages/WurfDetailPage.tsx
index 477a6bb..9023abb 100644
--- a/gerbil-manager-web/src/pages/WurfDetailPage.tsx
+++ b/gerbil-manager-web/src/pages/WurfDetailPage.tsx
@@ -1,15 +1,62 @@
-import { useCallback, useMemo } from 'react'
+import { useCallback, useMemo, useState } from 'react'
 import { Link, useParams } from 'react-router-dom'
 import { de } from '../strings/de'
 import { getLitter } from '../api/litters'
 import { getGerbil, listGerbils } from '../api/gerbils'
 import { listColorVarieties, listContacts } from '../api/lookups'
+import { API_BASE_URL } from '../api/client'
 import { condition } from '../api/gridify'
+import { type Gerbil } from '../api/types'
 import { useApi } from '../hooks/useApi'
 import { formatDate, genderLabel } from '../format/labels'
 import { isValidGenotype } from '../format/genotypeText'
 import { breed, fromDisplayString, genotypeToFarbschlag, UNKNOWN_FARBSCHLAG, type BreedingResult } from '../genetics'
 import BreedingResultView from '../components/BreedingResultView'
+import GerbilIcon from '../components/GerbilIcon'
+import './wuerfe.css'
+
+type JuvenileFields = (typeof de.pages.litters.detail.juvenileFields)
+
+function JuvenileCard({ g, farbe, receiver, tJf }: {
+  g: Gerbil
+  farbe: string | null
+  receiver: string | null
+  tJf: JuvenileFields
+}) {
+  const [failedUrl, setFailedUrl] = useState<string | null>(null)
+  const rawUrl = g.profilePhotoUrl
+    ? /^(https?:|data:|\/\/)/.test(g.profilePhotoUrl)
+      ? g.profilePhotoUrl
+      : `${API_BASE_URL}${g.profilePhotoUrl}`
+    : null
+  const photoUrl = rawUrl !== failedUrl ? rawUrl : null
+
+  return (
+    <Link to={`/rennmaeuse/${g.id}`} className="gerbil-card gerbil-card--with-photo">
+      <div className="juvenile-photo">
+        {photoUrl ? (
+          <img
+            src={photoUrl}
+            alt={g.name || ''}
+            className="juvenile-photo__avatar"
+            onError={() => setFailedUrl(rawUrl)}
+          />
+        ) : (
+          <GerbilIcon size="1.4rem" aria-hidden="true" />
+        )}
+      </div>
+      <div className="juvenile-body">
+        <span className="gerbil-card__name">{g.name}</span>
+        <span className="gerbil-card__meta">{genderLabel(g.gender)}</span>
+        {farbe && <span className="gerbil-card__meta">{tJf.colorVariety}: {farbe}</span>}
+        {g.goHomeDate && <span className="gerbil-card__meta">{tJf.goHomeDate}: {formatDate(g.goHomeDate)}</span>}
+        {receiver && <span className="gerbil-card__meta">{tJf.receiver}: {receiver}</span>}
+        {g.dateOfDeath && <span className="gerbil-card__meta">{tJf.dateOfDeath}: {formatDate(g.dateOfDeath)}</span>}
+        {g.causeOfDeath && <span className="gerbil-card__meta">{tJf.causeOfDeath}: {g.causeOfDeath}</span>}
+      </div>
+    </Link>
+  )
+}
 
 export default function WurfDetailPage() {
   const t = de.pages.litters
@@ -158,19 +205,11 @@ export default function WurfDetailPage() {
         <ul className="card-list">
           {(juveniles.data?.items ?? []).map((g) => {
             const farbe = farbschlagOf(g)
-            const receiver = g.receiverContactId ? contactNameById.get(g.receiverContactId) : null
+            const receiver = g.receiverContactId ? contactNameById.get(g.receiverContactId) ?? null : null
             const tJf = t.detail.juvenileFields
             return (
               <li key={g.id}>
-                <Link to={`/rennmaeuse/${g.id}`} className="gerbil-card">
-                  <span className="gerbil-card__name">{g.name}</span>
-                  <span className="gerbil-card__meta">{genderLabel(g.gender)}</span>
-                  {farbe && <span className="gerbil-card__meta">{tJf.colorVariety}: {farbe}</span>}
-                  {g.goHomeDate && <span className="gerbil-card__meta">{tJf.goHomeDate}: {formatDate(g.goHomeDate)}</span>}
-                  {receiver && <span className="gerbil-card__meta">{tJf.receiver}: {receiver}</span>}
-                  {g.dateOfDeath && <span className="gerbil-card__meta">{tJf.dateOfDeath}: {formatDate(g.dateOfDeath)}</span>}
-                  {g.causeOfDeath && <span className="gerbil-card__meta">{tJf.causeOfDeath}: {g.causeOfDeath}</span>}
-                </Link>
+                <JuvenileCard g={g} farbe={farbe} receiver={receiver} tJf={tJf} />
               </li>
             )
           })}
diff --git a/gerbil-manager-web/src/pages/wuerfe.css b/gerbil-manager-web/src/pages/wuerfe.css
new file mode 100644
index 0000000..479e89f
--- /dev/null
+++ b/gerbil-manager-web/src/pages/wuerfe.css
@@ -0,0 +1,34 @@
+/* JUVENILE-AVATARS: photo avatar to the left of each juvenile card. */
+.gerbil-card--with-photo {
+  display: flex;
+  align-items: flex-start;
+  gap: 0.75rem;
+}
+
+.juvenile-body {
+  min-width: 0;
+  flex: 1;
+  display: flex;
+  flex-direction: column;
+  gap: 0.2rem;
+}
+
+.juvenile-photo {
+  flex: none;
+  width: 36px;
+  height: 36px;
+  border-radius: 50%;
+  overflow: hidden;
+  background: var(--color-accent-soft);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  align-self: center;
+}
+
+.juvenile-photo__avatar {
+  width: 100%;
+  height: 100%;
+  object-fit: cover;
+  display: block;
+}