From grinning gorillas to delighted dogs, members of the animal kingdom smile for the camera

THIS grinning gorilla shows it’s not just Goldie the pufferfish who has plenty to be happy about. Goofy Goldie featured in yesterday’s Sun, right, after she had tooth surgery to help her eat. This grinning gorilla shows it’s not just Goldie the pufferfish who has plenty to be happy about.Caters They’re not the only beasts raising smiles, with a dog, sloth, koala and alpaca getting in on the act. Wild Life Sydney Zoo in Australia caught a koala bear looking particularly pleased with itself after chomping on a load of eucalyptus leaves. This pup flaunted its teeth in this snap Wild Life Sydney Zoo in Australia caught a koala bear looking particularly pleased with itself after chomping on a load of eucalyptus leaveswildlifesydneyzoo/instagram This sloth lets its upside down frown shine through in this pic This alpaca had lots to grin about in this snapImgur Most read in The Sun MAJOR SHOCK New evidence about chief Maddie suspect leaves investigators 'shocked' DID YOU KNOW? New Highway Code rule changes that could land YOU a huge £1k fine STAB TRAGEDY 'Vigilante' driver arrested for 'hitting & killing knifeman' who stabbed mum THAT'S A WRAP McDonald's confirms it is axing two popular menu items FOREVER PRICE PAID Katie Price avoids court drama today by paying £7k fine after arrest over texts FAMILY TIES I’m 29 with a 19-year-old daughter… people troll me for it but we get on well