I had new growth chewed off of mine too when i had it outside this spring.

I know how annoying it is. It was rats!

Here is my post from earlier this year...

Chewed Pachyclada

Don't fret. I used to get so ticked off when my German Shepherd would enthusiastically wag her tail and smash into a plant and, BAM, break it! What I learned is that this impromptu pruning usually resulted in a better looking plant. Oh, it takes time when it's a succulent (sometimes a whole year), but in the end, it made it more compact or made it sprout new growth in two other places that made it more interesting... So I've learned to never be upset by accidental (or "nature") prunings. It may just end up inspiring new growth that will be better than if it had been on it's natural path.

Denise in Omaha

Denise is right. You will also get a lot of new growth.

I suspect it's rats too. Too much growth eaten for a catapillar, roach, or snail but I put out snail bait and roach motels anyway.

This was sp. Estrella Waterfall.

Put rat traps around the plants.

I believe you! I get trash pandas (raccoons) all up in my pots during late Spring and throughout the summer. But, for them, it's more a curiosity thing.

I like to put my rooted cuttings in little pots in a cat litter pan until they get big enough to pot in larger pots. Today when moving a whole pan full of Holiday Cactus inside for the winter it cracked and dumped everyone on the indoor carpet. A mess of wet soil, I had just sprayed off all the summer pollen/dust, and broken off little branches with buds on them. I have got them all started rooting, trying to look at the positive side of this like the above poster--more plants and hopefully branching Thanksgiving and Easter cactus. Waaaa

mikerno, I think these were tree rats. That makes a lot of sense. It hasn't rained here in over a month. I noticed a nibble on another plant. Why do they have to go for my favorite?

rats (or squirrels) ate up one of my succulents. I have another so not such a big deal...this time. Traps don't really work if you have a lot of rats and after my dog ate poison I fear putting it out.

The dog survived but she never forgets that she found something good to eat in the shade house.

good luck br