A few questions.

1. How to change the size of hitbox? 

2. (because of player sized hitbox) Why my wolf-sized mob can't attack mobs? My mob is just pushing another mob.

3. Why my gradle task failed? Nothing blocks internet.

    
Executing gradle command: clean build
Microsoft Windows [Version 10.0.14393]
(c) Љ®аЇ®а жЁп Њ ©Єа®б®дв (Microsoft Corporation), 2016. ‚ᥠЇа ў  § йЁйҐ­л.
C:\Pylo\MCreator171>cd forge
C:\Pylo\MCreator171\forge>SET "JAVA_HOME=C:\Pylo\MCreator171\jdk32\"
C:\Pylo\MCreator171\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Pylo\MCreator171\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Pylo\MCreator171\forge>gradlew -Dorg.gradle.jvmargs="-Xms512m -Xmx1024m" clean build
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/2.14/userguide/gradle_daemon.html.
FAILURE: Build failed with an exception.
BUILD FAILED
* WhatA problem occTotal time: 36.5 secs
urred configuring root project 'forge'.
 went wrong:
> Could not resolve all dependencies for configuration ':classpath'.
> Could not resolve net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT.
     Required by:
         :forge:unspecified
> Could not resolve net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT.
> Unable to load Maven meta-data from http://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGr….
> Could not GET 'http://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGr…;.
> Connect to files.minecraftforge.net:80 [files.minecraftforge.net/158.69.55.219] failed: Connection timed out: connect
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
C:\Pylo\MCreator171\forge>
Task completed with return code 0 in 37876 milliseconds
   
Executing gradle command: clean build
Microsoft Windows [Version 10.0.14393]
(c) Љ®аЇ®а жЁп Њ ©Єа®б®дв (Microsoft Corporation), 2016. ‚ᥠЇа ў  § йЁйҐ­л.
C:\Pylo\MCreator171>cd forge
C:\Pylo\MCreator171\forge>SET "JAVA_HOME=C:\Pylo\MCreator171\jdk32\"
C:\Pylo\MCreator171\forge>SET JAVA_EXE=%JAVA_HOME%\bin\java.exe
C:\Pylo\MCreator171\forge>SET PATH=%JAVA_HOME%\bin\;%PATH%
C:\Pylo\MCreator171\forge>gradlew -Dorg.gradle.jvmargs="-Xms512m -Xmx1024m" clean build
To honour the JVM settings for this build a new JVM will be forked. Please consider using the daemon: https://docs.gradle.org/2.14/userguide/gradle_daemon.html.
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring root project 'forge'.
BUILD FAILED
Total time: 30.376 secs
> Could not resolve all dependencies for configuration ':classpath'.
> Could not resolve net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT.
     Required by:
         :forge:unspecified
> Could not resolve net.minecraftforge.gradle:ForgeGradle:2.2-SNAPSHOT.
> Unable to load Maven meta-data from http://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGr….
> Could not GET 'http://files.minecraftforge.net/maven/net/minecraftforge/gradle/ForgeGr…;.
> Connect to files.minecraftforge.net:80 [files.minecraftforge.net/158.69.55.219] failed: Connection timed out: connect
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
C:\Pylo\MCreator171\forge>
Task completed with return code 0 in 31110 milliseconds