When deciding on your Halloween plans this year, don’t forget your furry friends! There is absolutely nothing cuter than our pets in costumes. Ghosts, pumpkins, spooky headgear — we love it all! Despite how adorable these animals are, they aren’t always happy to dress up for the season. You can put a costume on a pet, but you can’t make them smile in it!
We’ve scoured Instagram for the cutest pictures of grumpy dogs, cats, and other animals — including a pony and a chinchilla — all sporting the funniest frowns while wearing their Halloween costumes. Check out these fun pictures below to bring a little joy to your day.
Serious Snowpups

Instagram user @simbanala_thepugs shared an adorable snap of her pugs dressed as Olaf and Jack Frost.
©Instagram/simbanala_thepugs – Original
Snowmen are supposed to be happy, but snowpups? That’s a whole different story! These adorable pugs couldn’t be less happy about the Halloween costumes their owners dressed them in — Olaf the snowman from Frozen and Jack Frost, complete with stick arms, fuzzy white snow suits, and hats. We just know these cuties are wishing their costumes were made of real snow so they would melt right off.
I’ll Pose, But I Won’t Smile!

Bug is not a happy camper in this photo by @bugthebrusselsgriffon.
©Instagram/@bugthebrusselsgriffon – Original
This picture is giving, “My mom made me do this,” and we love it so much. Bug the Brussels Griffon is dressed like a little pumpkin farmer, complete with a little orange t-shirt and denim overalls. He is posing on a pumpkin like a champ, but that doesn’t mean he has to smile (or even pretend he’s having fun!).
No Puparazzi, Please!

This cute Boston terrier can’t get any peace with their human around, as shown in this adorable snap by @valentina_thetinyboston.
©Instagram/@valentina_thetinyboston – Original
Valentina, a tiny Boston terrier, does not want her picture taken, thank you very much. She just wants a relaxing day at the spa, complete with hair in curlers, but someone is around trying to get a photo of her. The narrowed eyes say it all!
A Ferocious Glare

Halloween is clearly not this opossum’s favorite holiday in a picture shared by @leonalee.theopossum.
©Instagram/@leonalee.theopossum – Original
“Why is this on my head?”, “I will murder you when you sleep”, “I just want another treat” — we can picture this opossum thinking all of these things as the animal wears a fuzzy lion mane on its head. It’s too cute, though!
This Snuggle Bear Is Unimpressed

Instagram user @gusgusinthecity shared the cutest picture of this real-life teddy bear.
©Instagram/ @gusgusinthecity – Original
Have you ever seen something so cuddly look so grumpy? This adorable French bulldog could be a real stuffed animal in his teddy bear costume, complete with a little heart, but his frown shows how much he does not like his ‘fit. “I’m not cute; I’m tough!” he’s thinking. We still want to cuddle him anyway!
Hear Me Roar!

A Halloween costume that fits a chinchilla?! Instagram user @phillychinchilly shared the cutest picture.
©Instagram/@phillychinchilly – Original
We don’t see a chinchilla — that’s clearly a ferocious T. rex! Despite its cute appearance, it’s clear this pet is not happy about wearing a Halloween costume. “Can I at least get some candy?” it’s clearly thinking.
Neigh, Nay!

A ghost horse who is not happy about its costume, shared by @framaxbright.moon.
©Instagram/@framaxbright.moon – Original
This horse’s “neighs” are actually “nays” because it doesn’t want to be a ghost at all. “At least my friends won’t recognize me in this getup!”
Who’s the Real Devil Here?

Instagram user @boogoya6 captured an iconic picture of this cat in devil ears.
©Instagram/@boogoya6 – Original
Sure, this kitty is wearing a devil costume, but the truly evil one is the human who made the cat dress up in the first place! We can imagine this cat thinking, “If I hear one more person calling me cute, then the claws are coming out!”
Unhappy Bunny

How perfect is this photo shared by @alanthebunny?
©Instagram/@alanthebunny – Original
“Vegetables are for eating, not for posing in,” this unhappy bunny is likely thinking. Alan the bunny looks so cute inside his pumpkin costume for a fall photoshoot — but we bet he immediately hopped out after this photo was snapped.
Ignore the Smiling Pumpkins

You can tell this cow from @hickoryhearthhighlands wouldn’t agree to wear any other costume. Even the pumpkin headband is pushing it!
©Instagram/@hickoryhearthhighlands – Original
Don’t let the smiling jack-o’-lanterns’ faces fool you — this Scottish Highland cow is not at all happy to be dressed up for Halloween. “You got your picture; can I please eat dinner in peace now?” the grumpy cutie is probably thinking.
E.T. — Take Me Home!

We can’t get over this adorable snap by @moosethepersian.
©Instagram/@moosethepersian – Original
Moose the Persian cat wishes he could call home like E.T. because he hates his Halloween costume! It may be simple (just a towel in a basket like the famous scene from the ‘80s movie), but that doesn’t mean Moose has to like it. His attitude is just so darn cute, we can’t handle it!