I would like to animate red arrows, some one would help me? thank you.
\documentclass{beamer}
\usepackage{graphics}
\usepackage[T1]{fontenc}
\usepackage[ansinew]{inputenc}
\usepackage{lmodern}
\usepackage{pgf}
\usepackage{amsfonts}
\usepackage{eurosym}
\usepackage{graphicx}
\usepackage{amsmath}
\usepackage{tikz}
\texhash
\usepackage{mathrsfs}
\begin{document}
\begin{tikzpicture}
\node[draw,very thick](1) at (0,0){A};
\node[draw,very thick](2) at (5,2){B};
\node[draw,very thick](3) at (3,-2){C};
\node[draw,very thick](6) at (7,-2){D};
\node[draw,very thick](7) at (10,0){E };
\node[draw,very thick](8) at (0,-4){F};
\node[draw,very thick](9) at (3,-4){G};
\node[draw,very thick](10) at (7,-4){H};
\node[draw,very thick](11) at (10,-4){I};
\draw[->] [>=stealth,red,very thick](1) to (2);
\draw[->] [>=stealth,red,very thick](1) to (3);
\draw[->] [>=stealth,red,very thick](2) to (7);
\draw[->] [>=stealth,very thick](6) to (7);
\draw[->] [>=stealth,very thick](3) to (6);
\draw[->] [>=stealth,very thick](3) to (6);
\draw[->] [>=stealth,very thick](8) to (9);
\draw[->] [>=stealth,very thick](9) to (3);
\draw[->] [>=stealth,very thick](9) to (10);
\draw[->] [>=stealth,very thick](10) to (11);
\draw[->] [>=stealth,very thick](11) to (7);
\draw[->] [>=stealth,red,very thick](2) to (6);
\draw[->] [>=stealth,very thick](10) to (6);
\draw[->] [>=stealth,very thick](3) to (11);
\end{tikzpicture}
\end{frame}
\end{document}

\begin{document}? ;) And most importantly: why animate arrows? If you want them to attract attention, better make them red/big/encircled etc. – mbork Mar 17 '14 at 13:51decorations. An example of use with beamer's syntax in http://tex.stackexchange.com/a/83468/1952 and with animate http://tex.stackexchange.com/a/75797/1952 – Ignasi Mar 17 '14 at 16:42