diff --git a/README.md b/README.md
index 26681c8..40fb0fe 100644
Binary files a/README.md and b/README.md differ
diff --git a/er-pet-adoption.drawio b/er-pet-adoption.drawio
new file mode 100644
index 0000000..aca0d71
--- /dev/null
+++ b/er-pet-adoption.drawio
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