diff --git a/lib/core/pagination/pagination_response.dart b/lib/core/pagination/pagination_response.dart
index b1705c7..f3beec9 100644
--- a/lib/core/pagination/pagination_response.dart
+++ b/lib/core/pagination/pagination_response.dart
@@ -15,7 +15,7 @@ class PaginationResponse<T> {
         items = (json['items'] as List<dynamic>)
             .map((e) => fromJson.call(e))
             .toList(),
-        isLastPage = json['is_last_page'] as bool;
+        isLastPage = json['isLastPage'] as bool;
 
   final int page;
   final int size;
diff --git a/lib/features/pet/data/dto/pet_data_dto.dart b/lib/features/pet/data/dto/pet_data_dto.dart
index fc26129..72b5e12 100644
--- a/lib/features/pet/data/dto/pet_data_dto.dart
+++ b/lib/features/pet/data/dto/pet_data_dto.dart
@@ -16,16 +16,13 @@ class PetDataListDto {
 @JsonSerializable()
 class PetDataDto {
   final int id;
-  @JsonKey(name: 'birth_date')
   final String birthDate;
   final String breed;
   final String name;
   final bool neutered;
-  @JsonKey(name: 'pet_type')
   final String petType;
   final String sex;
-  @JsonKey(name: 'weight_in_kg')
-  final int weightKg;
+  final int weightInKg;
 
   PetDataDto({
     required this.id,
@@ -35,7 +32,7 @@ class PetDataDto {
     required this.neutered,
     required this.petType,
     required this.sex,
-    required this.weightKg,
+    required this.weightInKg,
   });
 
   factory PetDataDto.fromJson(Map<String, dynamic> json) =>
diff --git a/lib/features/pet/data/dto/pet_data_dto.g.dart b/lib/features/pet/data/dto/pet_data_dto.g.dart
index fe3e1ec..a2a44c3 100644
--- a/lib/features/pet/data/dto/pet_data_dto.g.dart
+++ b/lib/features/pet/data/dto/pet_data_dto.g.dart
@@ -20,23 +20,23 @@ Map<String, dynamic> _$PetDataListDtoToJson(PetDataListDto instance) =>
 
 PetDataDto _$PetDataDtoFromJson(Map<String, dynamic> json) => PetDataDto(
       id: json['id'] as int,
-      birthDate: json['birth_date'] as String,
+      birthDate: json['birthDate'] as String,
       breed: json['breed'] as String,
       name: json['name'] as String,
       neutered: json['neutered'] as bool,
-      petType: json['pet_type'] as String,
+      petType: json['petType'] as String,
       sex: json['sex'] as String,
-      weightKg: json['weight_in_kg'] as int,
+      weightInKg: json['weightInKg'] as int,
     );
 
 Map<String, dynamic> _$PetDataDtoToJson(PetDataDto instance) =>
     <String, dynamic>{
       'id': instance.id,
-      'birth_date': instance.birthDate,
+      'birthDate': instance.birthDate,
       'breed': instance.breed,
       'name': instance.name,
       'neutered': instance.neutered,
-      'pet_type': instance.petType,
+      'petType': instance.petType,
       'sex': instance.sex,
-      'weight_in_kg': instance.weightKg,
+      'weightInKg': instance.weightInKg,
     };
diff --git a/lib/features/pet/domain/breed.dart b/lib/features/pet/domain/breed.dart
index 2285e02..af61b2d 100644
--- a/lib/features/pet/domain/breed.dart
+++ b/lib/features/pet/domain/breed.dart
@@ -10,7 +10,7 @@ part 'breed.g.dart';
 class Breed with _$Breed {
   factory Breed({
     required int id,
-    @JsonKey(name: 'pet_type') required PetType petType,
+    required PetType petType,
     required String name,
   }) = _Breed;
 
diff --git a/lib/features/pet/domain/breed.freezed.dart b/lib/features/pet/domain/breed.freezed.dart
index 9977e07..df1f0cf 100644
--- a/lib/features/pet/domain/breed.freezed.dart
+++ b/lib/features/pet/domain/breed.freezed.dart
@@ -21,7 +21,6 @@ Breed _$BreedFromJson(Map<String, dynamic> json) {
 /// @nodoc
 mixin _$Breed {
   int get id => throw _privateConstructorUsedError;
-  @JsonKey(name: 'pet_type')
   PetType get petType => throw _privateConstructorUsedError;
   String get name => throw _privateConstructorUsedError;
 
@@ -35,7 +34,7 @@ abstract class $BreedCopyWith<$Res> {
   factory $BreedCopyWith(Breed value, $Res Function(Breed) then) =
       _$BreedCopyWithImpl<$Res, Breed>;
   @useResult
-  $Res call({int id, @JsonKey(name: 'pet_type') PetType petType, String name});
+  $Res call({int id, PetType petType, String name});
 }
 
 /// @nodoc
@@ -78,7 +77,7 @@ abstract class _$$_BreedCopyWith<$Res> implements $BreedCopyWith<$Res> {
       __$$_BreedCopyWithImpl<$Res>;
   @override
   @useResult
-  $Res call({int id, @JsonKey(name: 'pet_type') PetType petType, String name});
+  $Res call({int id, PetType petType, String name});
 }
 
 /// @nodoc
@@ -114,10 +113,7 @@ class __$$_BreedCopyWithImpl<$Res> extends _$BreedCopyWithImpl<$Res, _$_Breed>
 /// @nodoc
 @JsonSerializable()
 class _$_Breed implements _Breed {
-  _$_Breed(
-      {required this.id,
-      @JsonKey(name: 'pet_type') required this.petType,
-      required this.name});
+  _$_Breed({required this.id, required this.petType, required this.name});
 
   factory _$_Breed.fromJson(Map<String, dynamic> json) =>
       _$$_BreedFromJson(json);
@@ -125,7 +121,6 @@ class _$_Breed implements _Breed {
   @override
   final int id;
   @override
-  @JsonKey(name: 'pet_type')
   final PetType petType;
   @override
   final String name;
@@ -166,7 +161,7 @@ class _$_Breed implements _Breed {
 abstract class _Breed implements Breed {
   factory _Breed(
       {required final int id,
-      @JsonKey(name: 'pet_type') required final PetType petType,
+      required final PetType petType,
       required final String name}) = _$_Breed;
 
   factory _Breed.fromJson(Map<String, dynamic> json) = _$_Breed.fromJson;
@@ -174,7 +169,6 @@ abstract class _Breed implements Breed {
   @override
   int get id;
   @override
-  @JsonKey(name: 'pet_type')
   PetType get petType;
   @override
   String get name;
diff --git a/lib/features/pet/domain/breed.g.dart b/lib/features/pet/domain/breed.g.dart
index 949f935..b1e0780 100644
--- a/lib/features/pet/domain/breed.g.dart
+++ b/lib/features/pet/domain/breed.g.dart
@@ -8,13 +8,13 @@ part of 'breed.dart';
 
 _$_Breed _$$_BreedFromJson(Map<String, dynamic> json) => _$_Breed(
       id: json['id'] as int,
-      petType: $enumDecode(_$PetTypeEnumMap, json['pet_type']),
+      petType: $enumDecode(_$PetTypeEnumMap, json['petType']),
       name: json['name'] as String,
     );
 
 Map<String, dynamic> _$$_BreedToJson(_$_Breed instance) => <String, dynamic>{
       'id': instance.id,
-      'pet_type': _$PetTypeEnumMap[instance.petType]!,
+      'petType': _$PetTypeEnumMap[instance.petType]!,
       'name': instance.name,
     };
 
diff --git a/lib/features/pet/entities/pet_data_entity.dart b/lib/features/pet/entities/pet_data_entity.dart
index b544078..7d14e2a 100644
--- a/lib/features/pet/entities/pet_data_entity.dart
+++ b/lib/features/pet/entities/pet_data_entity.dart
@@ -28,7 +28,7 @@ class PetDataEntity with _$PetDataEntity {
         neutered: dto.neutered,
         petType: PetType.getByCode(dto.petType),
         sexType: SexType.getByCode(dto.sex),
-        weightKg: dto.weightKg,
+        weightKg: dto.weightInKg,
         breed: dto.breed);
   }
 }
diff --git a/lib/features/pet/entities/pet_data_entity.freezed.dart b/lib/features/pet/entities/pet_data_entity.freezed.dart
index 802dd26..951673b 100644
--- a/lib/features/pet/entities/pet_data_entity.freezed.dart
+++ b/lib/features/pet/entities/pet_data_entity.freezed.dart
@@ -21,6 +21,7 @@ mixin _$PetDataEntity {
   String get name => throw _privateConstructorUsedError;
   bool get neutered => throw _privateConstructorUsedError;
   PetType get petType => throw _privateConstructorUsedError;
+  @JsonKey(name: 'sex')
   SexType get sexType => throw _privateConstructorUsedError;
   int get weightKg => throw _privateConstructorUsedError;
   String get breed => throw _privateConstructorUsedError;
@@ -42,7 +43,7 @@ abstract class $PetDataEntityCopyWith<$Res> {
       String name,
       bool neutered,
       PetType petType,
-      SexType sexType,
+      @JsonKey(name: 'sex') SexType sexType,
       int weightKg,
       String breed});
 }
@@ -120,7 +121,7 @@ abstract class _$$_PetDataEntityCopyWith<$Res>
       String name,
       bool neutered,
       PetType petType,
-      SexType sexType,
+      @JsonKey(name: 'sex') SexType sexType,
       int weightKg,
       String breed});
 }
@@ -191,7 +192,7 @@ class _$_PetDataEntity extends _PetDataEntity {
       required this.name,
       required this.neutered,
       required this.petType,
-      required this.sexType,
+      @JsonKey(name: 'sex') required this.sexType,
       required this.weightKg,
       required this.breed})
       : super._();
@@ -207,6 +208,7 @@ class _$_PetDataEntity extends _PetDataEntity {
   @override
   final PetType petType;
   @override
+  @JsonKey(name: 'sex')
   final SexType sexType;
   @override
   final int weightKg;
@@ -253,7 +255,7 @@ abstract class _PetDataEntity extends PetDataEntity {
       required final String name,
       required final bool neutered,
       required final PetType petType,
-      required final SexType sexType,
+      @JsonKey(name: 'sex') required final SexType sexType,
       required final int weightKg,
       required final String breed}) = _$_PetDataEntity;
   const _PetDataEntity._() : super._();
@@ -269,6 +271,7 @@ abstract class _PetDataEntity extends PetDataEntity {
   @override
   PetType get petType;
   @override
+  @JsonKey(name: 'sex')
   SexType get sexType;
   @override
   int get weightKg;
diff --git a/lib/features/sos/data/dto/sos_post_dto.dart b/lib/features/sos/data/dto/sos_post_dto.dart
index 7e3c114..b5a3a34 100644
--- a/lib/features/sos/data/dto/sos_post_dto.dart
+++ b/lib/features/sos/data/dto/sos_post_dto.dart
@@ -15,16 +15,12 @@ class SosPostDto {
   final AuthorDto author;
   final String title;
   final String content;
-  @JsonKey(name: 'date_start_at')
   final String dateStartAt;
-  @JsonKey(name: 'date_end_at')
   final String dateEndAt;
-  @JsonKey(name: 'thumbnail_id')
   final int thumbnailId;
   final List<SosConditionDto> conditions;
   final List<MediaImageDto> media;
   final String reward;
-  @JsonKey(name: 'reward_amount')
   final String rewardAmount;
   final List<PetDataDto> pets;
 
diff --git a/lib/features/sos/data/dto/sos_post_dto.g.dart b/lib/features/sos/data/dto/sos_post_dto.g.dart
index c8f6856..3dba01d 100644
--- a/lib/features/sos/data/dto/sos_post_dto.g.dart
+++ b/lib/features/sos/data/dto/sos_post_dto.g.dart
@@ -17,11 +17,11 @@ SosPostDto _$SosPostDtoFromJson(Map<String, dynamic> json) => SosPostDto(
           .map((e) => MediaImageDto.fromJson(e as Map<String, dynamic>))
           .toList(),
       title: json['title'] as String,
-      dateStartAt: json['date_start_at'] as String,
-      dateEndAt: json['date_end_at'] as String,
-      thumbnailId: json['thumbnail_id'] as int,
+      dateStartAt: json['dateStartAt'] as String,
+      dateEndAt: json['dateEndAt'] as String,
+      thumbnailId: json['thumbnailId'] as int,
       reward: json['reward'] as String,
-      rewardAmount: json['reward_amount'] as String,
+      rewardAmount: json['rewardAmount'] as String,
       pets: (json['pets'] as List<dynamic>)
           .map((e) => PetDataDto.fromJson(e as Map<String, dynamic>))
           .toList(),
@@ -33,12 +33,12 @@ Map<String, dynamic> _$SosPostDtoToJson(SosPostDto instance) =>
       'author': instance.author,
       'title': instance.title,
       'content': instance.content,
-      'date_start_at': instance.dateStartAt,
-      'date_end_at': instance.dateEndAt,
-      'thumbnail_id': instance.thumbnailId,
+      'dateStartAt': instance.dateStartAt,
+      'dateEndAt': instance.dateEndAt,
+      'thumbnailId': instance.thumbnailId,
       'conditions': instance.conditions,
       'media': instance.media,
       'reward': instance.reward,
-      'reward_amount': instance.rewardAmount,
+      'rewardAmount': instance.rewardAmount,
       'pets': instance.pets,
     };