Well...Shanith here has some ideas...A lot in fact....
1.
Ability to tilt your head whatever direction. I think this is a minor Idea though, not a big one. Some people lately have been complaining on. "I wish I could tilt my head!"
2.
Ability to change your pace (running) I t'was thinkin' If we were able to go what ever speed we wanted (gait) Think horse. A horse has a few gaits. Why can't wolves and lions have some? Like: Walk, fast walk, jog, run, sprint.
Just thinking, for It may be more handy, for some. Also be able to stay at a certain pace. The only paces we got now is Walking, and running, and the dash xD.
3.
Lions and Dogs should both have the same selection of manes, tails, tufts. I say this is because what if we wanted to make a lion/wolf creature? Lion mane, wolf body. Aye? Sound good. All that would be needed is to combine them both. The wolves should be able to have a lion tail:D and the lion's have a wolf tail

4.
Ability to have water sticking to your body Make it more realistic. We can swim, but when we get out of the water we are dry. I t'was thinking. If there was a way to make the fur look wet, and a shake action water flying in different directions, It would be more realistic.
5.
Length of Tail, width of tail I like this idea almost the most. I think it would be great if we were able to change the lengths of our tails, and the widths. The wider the fluffier

6.
A few actions Actions like: Scratching (the ground) Like um digging. Limping - like if you are hurt, one paw up, Drooling (not really) Dogs drool don't they?, A squirm action - the ability to squirm
7.
Longer name length The name maximum length needs to be larger, Some names are long. And the names get cut off.
That's my ideas, you can post your opinoins below.