The cat looks at a specific point without the help of any scratch blocks, just math, click inside to see the scripts and use them if you desire to. I haven't posted in forever cuz I have a life and, scratch is starting to leave me, so enjoy the last few projects I make.
How this works - So you have a point given, and what you do is find the x distance and the y distance of the sprite from the point, take their absolute value if they are negative, and since this literally forms a right triangle without the hypotenuse, we can use the inverse of the tangent(atan) so find the angle of the hypotenuse, the hypotenuse is the line that which the cat looks at the point. positive or negative if it is in opposite quadrants 2 & 4, and 180- or 180+ if it is in quadrants 1 & 3.