diff --git a/client/src/components/PedigreeTree.jsx b/client/src/components/PedigreeTree.jsx
new file mode 100644
index 0000000..ee72413
--- /dev/null
+++ b/client/src/components/PedigreeTree.jsx
@@ -0,0 +1,167 @@
+import { useState, useCallback, useEffect } from 'react'
+import Tree from 'react-d3-tree'
+import { ZoomIn, ZoomOut, Maximize2, Download } from 'lucide-react'
+import './PedigreeTree.css'
+
+const PedigreeTree = ({ dogId, pedigreeData, coi }) => {
+  const [translate, setTranslate] = useState({ x: 0, y: 0 })
+  const [zoom, setZoom] = useState(0.8)
+  const [dimensions, setDimensions] = useState({ width: 0, height: 0 })
+
+  useEffect(() => {
+    const updateDimensions = () => {
+      const container = document.getElementById('tree-container')
+      if (container) {
+        setDimensions({
+          width: container.offsetWidth,
+          height: container.offsetHeight
+        })
+        setTranslate({
+          x: container.offsetWidth / 4,
+          y: container.offsetHeight / 2
+        })
+      }
+    }
+    
+    updateDimensions()
+    window.addEventListener('resize', updateDimensions)
+    return () => window.removeEventListener('resize', updateDimensions)
+  }, [])
+
+  const handleZoomIn = () => setZoom(z => Math.min(z + 0.2, 2))
+  const handleZoomOut = () => setZoom(z => Math.max(z - 0.2, 0.2))
+  const handleReset = () => {
+    setZoom(0.8)
+    setTranslate({
+      x: dimensions.width / 4,
+      y: dimensions.height / 2
+    })
+  }
+
+  const renderCustomNode = ({ nodeDatum, toggleNode }) => {
+    const isMale = nodeDatum.attributes?.sex === 'male'
+    const nodeColor = isMale ? '#3b82f6' : '#ec4899'
+    
+    return (
+      <g>
+        <circle
+          r={30}
+          fill={nodeColor}
+          stroke="#fff"
+          strokeWidth={3}
+          opacity={0.9}
+          style={{ cursor: nodeDatum.attributes?.id ? 'pointer' : 'default' }}
+          onClick={() => {
+            if (nodeDatum.attributes?.id) {
+              window.location.href = `/dogs/${nodeDatum.attributes.id}`
+            }
+          }}
+        />
+        <text
+          fill="#fff"
+          fontSize="24"
+          textAnchor="middle"
+          dy="8"
+          style={{ pointerEvents: 'none' }}
+        >
+          {isMale ? '♂' : '♀'}
+        </text>
+        <text
+          fill="#1f2937"
+          fontSize="14"
+          fontWeight="600"
+          textAnchor="middle"
+          x="0"
+          y="50"
+          style={{ pointerEvents: 'none' }}
+        >
+          {nodeDatum.name}
+        </text>
+        {nodeDatum.attributes?.registration && (
+          <text
+            fill="#6b7280"
+            fontSize="11"
+            textAnchor="middle"
+            x="0"
+            y="65"
+            style={{ pointerEvents: 'none' }}
+          >
+            {nodeDatum.attributes.registration}
+          </text>
+        )}
+        {nodeDatum.attributes?.birth_year && (
+          <text
+            fill="#6b7280"
+            fontSize="11"
+            textAnchor="middle"
+            x="0"
+            y="78"
+            style={{ pointerEvents: 'none' }}
+          >
+            ({nodeDatum.attributes.birth_year})
+          </text>
+        )}
+      </g>
+    )
+  }
+
+  return (
+    <div className="pedigree-tree-wrapper">
+      <div className="pedigree-controls">
+        <div className="control-group">
+          <button onClick={handleZoomIn} className="control-btn" title="Zoom In">
+            <ZoomIn size={20} />
+          </button>
+          <button onClick={handleZoomOut} className="control-btn" title="Zoom Out">
+            <ZoomOut size={20} />
+          </button>
+          <button onClick={handleReset} className="control-btn" title="Reset View">
+            <Maximize2 size={20} />
+          </button>
+        </div>
+        {coi !== null && coi !== undefined && (
+          <div className="coi-display">
+            <span className="coi-label">COI:</span>
+            <span className={`coi-value ${coi > 10 ? 'high' : coi > 5 ? 'medium' : 'low'}`}>
+              {coi.toFixed(2)}%
+            </span>
+          </div>
+        )}
+      </div>
+
+      <div className="pedigree-legend">
+        <div className="legend-item">
+          <div className="legend-color male"></div>
+          <span>Male</span>
+        </div>
+        <div className="legend-item">
+          <div className="legend-color female"></div>
+          <span>Female</span>
+        </div>
+      </div>
+
+      <div id="tree-container" className="tree-container">
+        {pedigreeData && dimensions.width > 0 && (
+          <Tree
+            data={pedigreeData}
+            translate={translate}
+            zoom={zoom}
+            onUpdate={({ zoom, translate }) => {
+              setZoom(zoom)
+              setTranslate(translate)
+            }}
+            orientation="horizontal"
+            pathFunc="step"
+            separation={{ siblings: 1.5, nonSiblings: 2 }}
+            nodeSize={{ x: 200, y: 150 }}
+            renderCustomNodeElement={renderCustomNode}
+            enableLegacyTransitions
+            transitionDuration={300}
+          />
+        )}
+      </div>
+    </div>
+  )
+}
+
+export default PedigreeTree
\ No newline at end of file