diff --git a/README.md b/README.md
index abe7694..47dee7d 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,7 @@ Example config:
 ```toml
 CoverImageDir = "cover-images"
 Debug = false
-MaxImageID = 40
+MaxImageID = 41
 Port = ":3000"
 TitleFont = "fonts/SourceHanSerif-Bold.ttc"
 NormalFont = "fonts/SourceHanSans-Medium.ttc"
@@ -83,8 +83,9 @@ Or simply...
 
 Many thanks :hugs: to following contributors:
 
-* [TahsinGokalp](https://github.com/TahsinGokalp) (Turkish Translation)
-* [wooogi123](https://github.com/wooogi123) (Korean Translation)
+* [TahsinGokalp](https://github.com/TahsinGokalp) (Turkish translation)
+* [wooogi123](https://github.com/wooogi123) (Korean translation)
+* [cauldnz](https://github.com/cauldnz) (Adding new animal)
 
 # Projects in Brotherhood
 
diff --git a/README_ZH.md b/README_ZH.md
index 42acd4b..71925d1 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -30,7 +30,7 @@ docker pull registry.cn-hongkong.aliyuncs.com/nanmu42/orly:[tag]
 ```toml
 CoverImageDir = "cover-images"
 Debug = false
-MaxImageID = 40
+MaxImageID = 41
 Port = ":3000"
 TitleFont = "fonts/SourceHanSerif-Bold.ttc"
 NormalFont = "fonts/SourceHanSans-Medium.ttc"
@@ -85,6 +85,7 @@ O'RLY 是一个简易的API服务和静态前端的组合：
 
 * [TahsinGokalp](https://github.com/TahsinGokalp) （土耳其语翻译）
 * [wooogi123](https://github.com/wooogi123) （韩语翻译）
+* [cauldnz](https://github.com/cauldnz) （新增动物）
 
 # 兄弟项目
 
diff --git a/cmd/rly/README.md b/cmd/rly/README.md
index d548895..03de255 100644
--- a/cmd/rly/README.md
+++ b/cmd/rly/README.md
@@ -21,7 +21,7 @@ cp config_example.toml config.toml
 ```toml
 CoverImageDir = "cover-images"
 Debug = false
-MaxImageID = 40
+MaxImageID = 41
 Port = ":3000"
 TitleFont = "fonts/SourceHanSerif-Bold.ttc"
 NormalFont = "fonts/SourceHanSans-Medium.ttc"
diff --git a/coverimage/frontendcodegen.go b/coverimage/frontendcodegen.go
index a44b7a8..6736de0 100644
--- a/coverimage/frontendcodegen.go
+++ b/coverimage/frontendcodegen.go
@@ -16,7 +16,7 @@ import (
 	"strings"
 )
 
-const max = 40
+const max = 41
 
 func main() {
 	var err error
diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index b376094..56ce421 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -78,10 +78,10 @@
         } else {
           color = this.colors[Math.floor(Math.random() * (this.colors.length - 1))].substring(1)
         }
-        if (input.animalCode !== "" && input.animalCode >= 0 && input.animalCode <= 40) {
+        if (input.animalCode !== "" && input.animalCode >= 0 && input.animalCode <= 41) {
           coverID = input.animalCode
         } else {
-          coverID = Math.floor(Math.random() * 40)
+          coverID = Math.floor(Math.random() * 41)
         }
 
         // escape user's input
diff --git a/frontend/src/assets/thumbnails/41.tif.gif b/frontend/src/assets/thumbnails/41.tif.gif
new file mode 100644
index 0000000..46f12a9
Binary files /dev/null and b/frontend/src/assets/thumbnails/41.tif.gif differ
diff --git a/frontend/src/components/Inputer.vue b/frontend/src/components/Inputer.vue
index a669623..adc5a79 100644
--- a/frontend/src/components/Inputer.vue
+++ b/frontend/src/components/Inputer.vue
@@ -31,7 +31,7 @@
 
     <label for="animal_code">{{$t("animal_code")}}</label>
     <input id="animal_code" name="animal_code" type="number" :placeholder="$t('animal_code_placeholder')"
-           v-model.number="input.animalCode" min="0" max="40">
+           v-model.number="input.animalCode" min="0" max="41">
 
     <label for="color_code">{{$t("color_code")}}</label>
     <input id="color_code" name="color_code" type="number" :placeholder="$t('color_code_placeholder')"
diff --git a/frontend/src/components/thumbnails.vue b/frontend/src/components/thumbnails.vue
index b7fc4bc..3994a7d 100644
--- a/frontend/src/components/thumbnails.vue
+++ b/frontend/src/components/thumbnails.vue
@@ -22,6 +22,7 @@
     <div class="animal"><img src="../assets/thumbnails/10.tif.gif" alt="10"/>10</div>
     <div class="animal"><img src="../assets/thumbnails/11.tif.gif" alt="11"/>11</div>
     <div class="animal"><img src="../assets/thumbnails/12.tif.gif" alt="12"/>12</div>
+    <div class="animal"><img src="../assets/thumbnails/13.tif.gif" alt="13"/>13</div>
     <div class="animal"><img src="../assets/thumbnails/14.tif.gif" alt="14"/>14</div>
     <div class="animal"><img src="../assets/thumbnails/15.tif.gif" alt="15"/>15</div>
     <div class="animal"><img src="../assets/thumbnails/16.tif.gif" alt="16"/>16</div>
@@ -49,6 +50,7 @@
     <div class="animal"><img src="../assets/thumbnails/38.tif.gif" alt="38"/>38</div>
     <div class="animal"><img src="../assets/thumbnails/39.tif.gif" alt="39"/>39</div>
     <div class="animal"><img src="../assets/thumbnails/40.tif.gif" alt="40"/>40</div>
+    <div class="animal"><img src="../assets/thumbnails/41.tif.gif" alt="41"/>41</div>
   </div>
 </template>
 
diff --git a/frontend/src/locales/en.json b/frontend/src/locales/en.json
index 93e73aa..4d2de8c 100644
--- a/frontend/src/locales/en.json
+++ b/frontend/src/locales/en.json
@@ -14,7 +14,7 @@
   "required": "required",
   "top_text": "Top Text",
   "animal_code": "Animal Code",
-  "animal_code_placeholder": "0-40 (listed below, defaults to random)",
+  "animal_code_placeholder": "0-41 (listed below, defaults to random)",
   "color_code": "Color Code",
   "color_code_placeholder": "0-16 (listed below, defaults to random)",
   "submit_word": "Generate O'RLY",
diff --git a/frontend/src/locales/kr.json b/frontend/src/locales/kr.json
index d113f61..d04ecbd 100644
--- a/frontend/src/locales/kr.json
+++ b/frontend/src/locales/kr.json
@@ -14,7 +14,7 @@
   "required": "필수",
   "top_text": "상단 텍스트",
   "animal_code": "동물 코드",
-  "animal_code_placeholder": "0-40 (목록은 하단에 있으며, 기본은 랜덤으로 설정)",
+  "animal_code_placeholder": "0-41 (목록은 하단에 있으며, 기본은 랜덤으로 설정)",
   "color_code": "색상 코드",
   "color_code_placeholder": "0-16 (목록은 하단에 있으며, 기본은 랜덤으로 설정)",
   "submit_word": "O'RLY 변환",
diff --git a/frontend/src/locales/tr.json b/frontend/src/locales/tr.json
index ff8abda..4ec270a 100644
--- a/frontend/src/locales/tr.json
+++ b/frontend/src/locales/tr.json
@@ -14,7 +14,7 @@
   "required": "zorunlu",
   "top_text": "Üst Yazı",
   "animal_code": "Hayvan Kodu",
-  "animal_code_placeholder": "0-40 (Kodlar aşağıda listelenmiştir, varsayılan rastgele)",
+  "animal_code_placeholder": "0-41 (Kodlar aşağıda listelenmiştir, varsayılan rastgele)",
   "color_code": "Renk Kodu",
   "color_code_placeholder": "0-16 (Kodlar aşağıda listelenmiştir, varsayılan rastgele)",
   "submit_word": "O'RLY Üret",
diff --git a/frontend/src/locales/zh.json b/frontend/src/locales/zh.json
index 8f7cb4d..a52ec19 100644
--- a/frontend/src/locales/zh.json
+++ b/frontend/src/locales/zh.json
@@ -14,7 +14,7 @@
   "required": "必填",
   "top_text": "顶部文字",
   "animal_code": "图片序号",
-  "animal_code_placeholder": "0-40（见下方图片列表，留空则随机）",
+  "animal_code_placeholder": "0-41（见下方图片列表，留空则随机）",
   "color_code": "颜色列表",
   "color_code_placeholder": "0-16（见下方颜色列表，留空则随机）",
   "submit_word": "生成封面",